Chapter Summaries

Sean learned the full, horrifying cost of the Blood Pact’s true power and concluded that Corinna had died because she still loved Skinner. He then suspected that Dumbledore and Grindelwald’s Blood Pact had shattered, leaving him unsure which wizard had betrayed the other, and asked Skinner to help prevent another tragedy.

• Skinner explained that the true Blood Pact required a lover to bury their love with a Memory Charm, make the other person hate them, then kill them and drink their blood to gain immense power and absorb their magic.
• Skinner confessed that Corinna had taken control of the contract, but Sean concluded that she had died because she still loved Skinner too much for her hatred to be pure.
• Sean reasoned that the Blood Pact between Dumbledore and Grindelwald might have broken, and wondered which of them intended to claim its power.
• Sean suspected that Marshall had shown Grindelwald proof of the shattered pact, explaining why the Returners trusted Dumbledore and believed the two wizards had split.
• Sean told Skinner that his betrayal and guilt were his own choices, then asked him to share everything he knew to help prevent another Blood Pact tragedy.

Sean learned that a shattered Blood Pact could not be safely dissolved and that its lingering magic could drive both partners toward madness. After Dumbledore’s past visit raised new questions, attackers led by the Lestrange brothers bombarded the ruins to capture Sean, but a Ukrainian Ironbelly Dragon struck as a mysterious ring opened a massive exit.

• Sean questioned Baron Skinner about the dangers of a shattered Blood Pact and learned that neither the true contract nor its temptation could be undone or safely ignored.
• Skinner said Grindelwald had visited without asking about the Blood Pact, while Dumbledore had investigated the shattered pact and reacted with unstable magic.
• Sean decided he needed to see Old Grindelwald’s complete ninety-seven years of memories in Dumbledore’s office, but Pudding’s roar and a magical bombardment interrupted him.
• Rodolphus Lestrange and Rabastan Lestrange ordered nearly fifty Dark Wizards to collapse the ruins and search for Sean alive while a Wampus Cat attacked them.
• A Ukrainian Ironbelly Dragon attacked the Lestrange forces, and a ring fell to the ground as a massive exit appeared.

Sean and his companions defeated a force of Dark Wizards sent against him, captured Fenrir Greyback, and dealt with the aftermath of Baron Skinner’s broken Blood Pact. Elsewhere, Grindelwald revealed that he had left hints for Sean and placed his hope in him.

• Sean used a Ukrainian Ironbelly Dragon disguise to draw the attackers’ attention while the Basilisk petrified most of the Dark Wizards.
• Sean hunted down Fenrir Greyback, defeated and bound him, then returned him to the ruins with the few survivors his companions had captured.
• Sean found several Death Eaters among the petrified attackers, stripped them of their belongings, and sent them into the ring.
• Baron Skinner refused Sean’s offer to end his existence, choosing to remain and atone after the Blood Pact pendant was destroyed.
• Grindelwald, hidden beneath an Invisibility Cloak on a sunless island, examined a cracked Blood Pact and said he hoped Sean would not disappoint him.

Sean investigated Voldemort’s return and wondered how the Death Eaters had learned he was at Baron Skinner’s Manor. He uncovered a powerful Confundus Charm on a forgotten memory bottle from Grindelwald, then entered it and found Grindelwald amid the ruined Great Hall at Hogwarts.

• Snape corrected Sean’s answer about brewing a Potent Poison Potion and deducted five points from Ravenclaw for his mistake.
• Sean recalled that Voldemort had returned in a weak, bodyless form and suspected that Seers among the Returners had revealed his actions.
• Sean worried that Young Grindelwald would refuse to cooperate and questioned what would happen when the two versions of Grindelwald merged.
• Sean examined Grindelwald’s Spell Demonstration and discovered that an improved Confundus Charm had made him overlook the memory bottle for years.
• Sean entered the memory and saw Hogwarts’s Great Hall in ruins, with Grindelwald sitting on a broken pillar and holding the Elder Wand.

Sean watched Grindelwald’s memory explain that the two Grindelbergs had to become consistent for the World Will to accept the altered timeline. Sean realized they could achieve this by extracting their memories from after 1899, and Grindelwald revealed he had prepared the location and means to persuade his other self.

• Sean recognized the memory as Grindelwald’s and heard him warn that revealing too much would awaken the World Will.
• Grindelwald explained that time would accept the altered timeline if both versions of him became consistent, and that Sean should focus on resolving the problem around him.
• Sean deduced that both Grindelwalds could extract their post-1899 memories to achieve consistency without copying or absorbing them.
• Grindelwald praised Sean for solving the problem and revealed that he had prepared a location and a way to persuade his other self.

In Grindelwald’s memory, he explained that reconciling his younger self with the future required matching their memories and magical power. He prepared Qilin’s Blood to strengthen Young Grindelwald, leaving Sean to return to the present with the task and a final apology for Albus.

• Grindelwald explained that a wizard’s unique magical imprint made it necessary to align both memories and magical power across time.
• He revealed that Qilin’s Blood could raise a wizard’s magical power enough to bridge the difference between his younger and older selves.
• Grindelwald killed two adult Qilins and infused their blood into an Asparagus Fern, then hid it in Sean’s ring for Young Grindelwald to use.
• Grindelwald told Sean to find the fern and give it to his younger self, and said his memory contained instructions for using it.
• As the memory began to collapse, Grindelwald told Sean that the world was in his hands, asked him to kill Grindelwald if matters became uncontrollable, and asked him to tell Albus, “Sorry.”

Sean found the solution to prevent Grindelwald’s time travel from awakening the World Will and obtained Dumbledore’s preserved memory, but discovered he still needed a second Time-Turner. He planned to use the Christmas holiday to visit Grindelwald’s hiding place, leaving the preparations stalled by the lack of one.

• Sean identified the Asparagus Fern containing two adult Qilins’ blood as the power source Young Grindelwald needed, and planned for the two Grindelwalds to share memories and use a Time-Turner in 1966.
• Sean told Dumbledore he had found a solution and needed his memory; Dumbledore revealed it was in the Headmaster’s Office and accepted Grindelwald’s apology through Sean.
• The Gargoyle told Sean that Dumbledore had often been away on exhausting, dangerous work, and Sean called out to affirm his trust and respect before leaving.
• Professor McGonagall announced that students would spend Christmas at Hogwarts, and Sean agreed to help them send letters to their families.
• Sean told Hermione and Daisy he planned to leave during the holiday, then realized he needed a second Time-Turner for Young Grindelwald and could find none through West or the wizarding black markets.

Sean searched Dumbledore’s office for a Time-Turner and discovered Grindelwald had hidden two inside a Golden Egg, along with a temporal-energy device. He brought them to Grindelwald on a hidden island, where Grindelwald realized the plan required both versions of himself to extract their memories.

• Sean learned from the former headmasters that Hogwarts and the Ministry likely had no usable spare Time-Turners, then recalled Grindelwald might have planned for this.
• Sean coated the Golden Egg with dragon blood, transformed into Grindelwald, and opened it by speaking Albus Dumbledore’s name in dragon language.
• The Golden Egg revealed a temporal-energy device and two Time-Turners, which Grindelwald identified as older and younger.
• Sean found Grindelwald on a concealed island, where the lake’s defenses calmed after Sean identified himself.
• Sean told Grindelwald that both versions of him needed to extract their memories, and Grindelwald inferred that the island held the means to convince his other self and increase magical power.

Sean searched the bottom of the lake for Grindelwald’s hidden item and discovered a bone nest containing an egg, guarded by a Selma Lake Monster. The creature badly injured Sean, who prepared to fight back.

• Sean transformed gills and drank an Underwater Breathing Potion before diving into Grindelwald’s lake, where hundreds of Inferi crowded the water.
• Sean searched the lakebed and found an underwater cave with a bone nest and a large, nearly hatching egg.
• A giant serpent attacked Sean in the cave, and he recognized it as the legendary Selma Lake Monster.
• Sean dodged the monster’s attacks and tried spells against it, but its scales resisted his magic and it sensed the currents around him.
• The Selma Lake Monster struck Sean across the back, breaking two of his ribs and leaving him furious.

Sean subdued the Selma Lake Monster, then befriended her and discovered a hidden chamber containing a memory vial, a ring like his own, and a note written by himself. The note revealed that another Timeline’s Sean had anticipated Grindelwald’s time-travel plan and left something inside the ring for him to find later.

• Sean buried the Selma Lake Monster beneath boulders and battered her with the Obscurus until she surrendered.
• Sean healed his ribs, calmed the lake monster, and used his affinity with Magical Creatures to tame her.
• Sean learned that the lake monster had hatched from an egg after wandering into the lake and eating Inferi for decades.
• The lake monster led Sean to a concealed crack in the cavern, where he found a vial of memories and a ring identical to his own.
• Sean read his own handwriting on a note instructing him not to look inside the ring until the teacher's time-travel accident had ended.

Sean left the Selma Lake Monster and its egg in his ring, gave Grindelwald a Christmas present, and returned to Godric’s Hollow. There, he encouraged Capen to value his friendship with Milani and gave him a Christmas gift, leaving Capen with the chance to respond to her kindness.

• Sean brought the Selma Lake Monster and its nearly hatched egg out of the lake and settled them among the creatures in his ring.
• Sean wished Grindelwald a Merry Christmas and gave him a gift before teasing him and leaving the island.
• Capen delivered supplies in Godric’s Hollow while thinking about his future magical education and his treatment for the Obscurus.
• Milani gave Capen homemade cookies for Christmas, but Capen hid the handmade gift he had prepared for her.
• Sean encouraged Capen to maintain his friendship with Milani and gave him a Christmas present after accepting Capen’s clay figurine.

Sean tried to unite the two Grindelwalds by showing the younger one a memory from 1996, while the World Will began to awaken in response. Capen chose to keep his friendship with Milani close as the world’s strange disturbance returned.

• Capen worried that Milani might fear him if she learned he was a wizard, then opened Sean’s Christmas gift and found a copy of Hogwarts: A History with a card from Sean.
• Sean explained his plan to make the two Grindelwalds one, but the younger Grindelwald refused because he wanted a world where no Obscuruses could be born.
• Sean offered the younger Grindelwald a memory from 1996, and Grindelwald agreed to watch it in the Dumbledore family’s ruined home.
• As Grindelwald entered the memory, the World Will began to awaken, darkening the sky and alarming people and creatures around the world.
• Dumbledore realized Sean had found the answer, Grindelwald began preparing, and Capen sensed the strange return of the time disturbance as he walked toward the tree.

Sean saw the World Disturbance end after Young Grindelwald finished viewing a future memory and agreed to cooperate with the plan. Hogwarts celebrated a subdued Christmas, but the chapter ended the next morning when Sean discovered his pajamas had become too short.

• Sean watched the distortion around Dumbledore's Old House stop and reverse, then found Young Grindelwald calm beside the Pensieve.
• Young Grindelwald told Sean to return the next day and said the plan was good and he had been convinced.
• Capen ran downhill with Milani as the strange feeling faded, then gave her his Christmas present.
• Sean returned to Hogwarts, where worried students discussed the World Disturbance and Dumbledore eased their fears at the Christmas tea party.
• Sean woke the next morning feeling tense and realized his pajamas had become too short.

Sean discovered that a Time Incident had taken a year from every conscious living being, leaving them physically and magically changed while the rest of the world remained largely untouched. As panic spread, Dumbledore gathered Hogwarts students and said the incident had moved in a positive direction, though he could not explain it further.

• Sean woke to find himself older, his injuries healed, his magic increased, and the date changed from 1993 to 1994.
• Daisy feared her Blood Curse had returned, but Sean reassured her that the changes came from the Time Incident.
• People across the world panicked as they discovered they had lost a year, while plants and inanimate objects appeared unchanged.
• Sean suspected the incident had directly deprived conscious living beings of a year and worried about its effects on the ill and on magical people.
• Hermione led Sean to the Great Hall, where Dumbledore confirmed that everyone had lost a year and said the Time Incident had moved in a positive direction.

Dumbledore explained that a year had vanished while students’ bodies and magical abilities had advanced, and announced revised courses and exams to account for their growth. Sean discovered that the missing year had also greatly increased his spell proficiency, while Dumbledore left to deal with wider consequences of the time incident.

• Dumbledore told the students that their memories remained unchanged, their bodies had aged a year, and many illnesses or injuries seemed to have improved rather than worsened.
• Sean asked whether the missing year could kill people with severe illnesses, and Dumbledore said he could not be certain but believed time had made predictions about their survival.
• Cedric asked whether another time incident might happen, and Dumbledore said shorter losses of hours were likely but an entire year was unlikely to disappear again.
• Hermione asked how classes would proceed, and Dumbledore announced accelerated coursework and more demanding exams for most years, including O.W.L.s for the new fifth-years in half a year.
• Sean checked his system and found that his spell proficiency had advanced to roughly sixty or seventy percent of the way through level two during the missing year.

Sean spent most of his accumulated lottery points on draws, receiving mostly common rewards before a final burst of rare prizes. He used a golden Snape set to improve his Potions Talent and gained abilities and wandmaking knowledge that left him considering how to upgrade his wand.

• Sean found that his Dark Arts spells had rapidly advanced to Level 3, including the Killing Curse, while his Ancient Spells had gained little proficiency.
• Sean discovered that his lottery pool had accumulated 1,450 points during his year-long disappearance and began spending them on repeated ten-pulls.
• Sean exhausted 1,300 points on mostly white prizes, a handful of blue rewards, and two purple items, then spent his remaining 150 points and received four golden rewards.
• Sean used the Severus Snape Advanced Set, raising his Potions Talent from 2 to 5 and gaining Potion Explorer, Haughty Gaze, and Cold Gaze.
• Sean examined Wandmaker's Glory, which granted the ability to embed magical materials into wands, and began considering adding something to the Elder Wand.

Sean discovered that Future's Gaze could let him control the power of his future self, Sin Pride, for five minutes once every six months, then visited his expanded Magical Creature habitat. He found his creatures had gathered for a debate over whether he was their friend or their master, while the newly hatched Thunderbirds settled into their enlarged territory.

• Sean inferred that Future's Gaze would let him control Sin Pride's power for five minutes once every six months.
• Sean reviewed the purple prizes, including a potion, a Wizard Hat, McGonagall's Transfiguration Experience Card, and Cultivation Liquid for Magical Creatures.
• Sean went to the Room of Requirement and found that his ring's Wasteland Area had expanded dramatically after the Thunderbird eggs hatched.
• Sean flew to the far side of the wasteland and found the Basilisk, Naja, Cat-Leopard Pudding, Thunderbirds, and Dave facing one another as the Aero-Wing Bird acted as referee.
• Sean learned that the creatures had been searching for the newly hatched Thunderbirds and were debating whether Sean was their friend or their master, with the losing side set to give up dinner.

Sean cared for the newly hatched Magical Creatures, then returned to Godric's Hollow to meet Young Grindelwald. After extracting the Qilin's Blood from the Asparagus Fern, Young Grindelwald swallowed it to gain its magic.

• Sean fed the seven young Thunderbirds and named them Firstborn, Second Brother, Third Sister, Fourth Brother, Fifth Sister, Sixth Brother, and Seven.
• Sean discovered that the Selma Lake Monster's egg had hatched and met its miniature offspring in the deep-water zone.
• Sean fed his Magical Creatures cultivation liquid and traveled to Godric's Hollow for his appointment with Young Grindelwald.
• Sean reassured Capen that his wish to speed up time had not caused the missing year and told him he could attend Hogwarts in a little over half a year.
• Sean gave Young Grindelwald the blood-infused Asparagus Fern, and Grindelwald extracted the Qilin's Blood and swallowed it.

Young Grindelwald absorbed Qilin's Blood, extracted a memory for Sean to safeguard and asked that it be shown to Dumbledore first. Back at Hogwarts, Sean resumed classes and agreed to teach Transfiguration to first-years after Professor McGonagall tested his skill.

• Young Grindelwald absorbed Qilin's Blood, drew a memory from himself, and gave Sean a Memory Bottle to keep until he reunited with his older self.
• Sean secured the Memory Bottle in a heavily protected safe and reflected on the upheaval caused by the year the world had vanished, including the strain on his family and the wider wizarding and Muggle communities.
• After classes resumed in 1995, Sean brewed an excellent potion, and Snape refrained from criticizing him while taking points from Harry.
• Professor McGonagall asked Sean to help teach first-year Transfiguration because the increased course load left her short of time.
• Sean demonstrated advanced Transfiguration skills, accepted the teaching materials and wages, and headed to the first-year classroom.

Sean Wallerup began teaching the lower-year students Transfiguration as Professor McGonagall’s teaching assistant, introducing the dangers of Vertebrate Transfiguration. He left the class shaken but attentive after demonstrating what could happen when a transformation failed.

• Sean introduced himself as Professor McGonagall’s teaching assistant and began the first lower-year Transfiguration lesson.
• Sean reviewed the students’ progress and used a rat skeleton to explain the difficulties of Vertebrate Transfiguration, including the importance of restoration.
• Sean warned Bram Laid for poking his rat, then restored Laid’s wooden box and showed that a strand of rat fur remained on his chin.
• Sean showed the class an image of a wizard disastrously transformed alongside a tiger, stressing that students must revere Transfiguration and follow his safety instructions.