Vol. 4The Lost Year

Sean uncovered Grindelwald’s plans, investigated the lost day and the Returners, and helped the younger Grindelwald reconnect with his older self. After the Time Incident shifted the world from 1993 to 1994 while everyone’s memories remained unchanged, Sean returned to Hogwarts to help teach Transfiguration.

  • Sean learned that Grindelwald had founded Merlin's Weekly Prophet and planted a Guard Corps mole, then rescued Hermione and Buckbeak from Dementors as prison breaks and attacks on Muggles escalated.
  • Sean led students in defying Umbridge’s restrictions, and she began foaming at the mouth during dinner after targeting Daisy.
  • Sean killed Little Aiken, took his identity, and destroyed the Aiken manor before Grindelwald claimed responsibility, then gained partial authority over the Room of Requirement from Rowena Ravenclaw’s statue.
  • Stephanie revealed that October 27 had lasted only four hours and that Grindelwald had tasked her with monitoring Sean, while Sean investigated the time-travel accident and the Returners.
  • Sean helped defend Hogwarts and Hogsmeade from attackers tied to the Returners, then watched Grindelwald win the Qilin Election after turning the crowd against the Guard Corps.
  • Sean concluded that Grindelwald had traveled from 1996 to 1899 and found the younger Grindelwald, then agreed to impersonate the unreachable older Grindelwald.
  • Sean learned from Baron Skinner how betrayal could break the Blood Pact and discovered that Qilin’s Blood could bridge Grindelwald’s younger and older selves.
  • Sean witnessed the Time Incident shift the world from 1993 to 1994, safeguarded a memory for Grindelwald, and returned to Hogwarts to help McGonagall teach Transfiguration.
Chapters 307–412 Read from ch. 307

Arc 13The Dementors and the Ministry

Sean uncovered new layers of Grindelwald’s plans while the Guard Corps struggled to manage its investigation, then faced a Dementor swarm and the growing crisis of prison breaks and attacks on Muggles. As the Ministry tightened its grip on Hogwarts, Sean and the students openly defied Umbridge, and she collapsed at dinner.

  • Sean read reports questioning Grindelwald’s arrest and learned that Cyril Marshall and Rosha Onassis had been found alive, while the Guard Corps’ mission ended with Onassis dead and Marshall freed from a curse.
  • Grindelwald visited Sean, explained that the Returners were dead wizards restored to reality, and revealed that he had founded Merlin's Weekly Prophet and planted a mole in the Guard Corps.
  • Sean learned that the Blood Pact was classified as one of the Ministry’s ten most dangerous magics, while Marshall agreed to testify publicly and the Guard Corps sent protection to Newt Scamander’s family.
  • Sean captured Newt Scamander’s former student West, who gave him a Golden Egg that hatched into an Aero-Wing Bird, and Sean later helped Hagrid lead a lesson with Buckbeak.
  • When Dementors cornered Hermione and Buckbeak, Sean rescued them, resisted the Dark Sleeper’s corrupting influence, and sent the creatures back toward Hogwarts.
  • Dumbledore announced mass prison breaks and attacks that had killed more than a hundred Muggles, so Sean contacted Lupin, arranged protection for families, and returned to Hogwarts.
  • Umbridge enforced Ministry restrictions and humiliated Fred Weasley, but Sean led students from every house in standing together and toasting across the Great Hall.
  • Sean tricked Umbridge with his transformed hedgehog, then watched Snape confront her after she targeted Daisy, and Umbridge began foaming at the mouth during dinner.
Chapters 307–332 Summaries Read

Arc 14The Lost Day

Sean’s schemes against Umbridge and the Aiken family led him to Ravenclaw’s hidden authority in the Room of Requirement. After a day vanished and Stephanie revealed her connection to Grindelwald, Sean began investigating time travel, the Returners, and the damaged Invisibility Cloak.

  • Sean trained Hermione and Daisy in the Patronus Charm, and Daisy conjured a silver Fire Dragon that strengthened their practice.
  • Umbridge and Fabian Aiken tightened their control of Hogwarts, while Sean persuaded Malfoy to unite Slytherins in the Society of Glory and challenge the divisions they encouraged.
  • Sean exposed Little Aiken’s plot, killed him, took his identity, and destroyed the Aiken family manor before Grindelwald claimed responsibility for the massacre.
  • After Umbridge was removed from Hogwarts, Sean developed the Flash Charm and combined it with the Summoning Charm to enter the Room of Requirement’s hidden collection.
  • Sean met Rowena Ravenclaw’s statue, gained partial authority over the Room of Requirement, and began searching for her Diadem with Helena’s help.
  • Stephanie told Sean that October 27 had lasted only four hours and confessed that Grindelwald had tasked her with monitoring him, before a hidden suggestion triggered her Sin of Lust.
  • Sean discovered that Dumbledore had taken Pensieves after the time-travel accident, then confronted him about a secretive Slytherin student before Harry reported that his Invisibility Cloak was damaged.
  • Sean suspected a time traveler had altered the past, while Grindelwald rallied supporters, the Guard continued its operation, and Sean investigated the Returners’ magic and sought help with Ancient Runes.
Chapters 333–358 Summaries Read

Arc 15The Qilin and the Lost Years

Sean helped thwart an attack on Hogwarts, then witnessed Grindelwald win the Confederation election and uncovered the truth about his journey through time. He found the younger Grindelwald and began acting in his place while the older Grindelwald remained unreachable.

  • Sean and Stephanie helped defend Hogwarts and Hogsmeade, where Sean freed Aurelius from a Silent Mouth and discovered the attackers’ ties to the Returners.
  • Sean learned that Dumbledore had made an agreement with the Returners as Grindelwald’s candidacy and the Qilin Election approached.
  • At the election in Bhutan, the Qilin chose Jacob, but Grindelwald turned the crowd against the Guard Corps and won the chairmanship.
  • Sean used Ravenclaw’s Diadem to uncover clues about Dumbledore’s memories and found a hidden Runic array beneath Newmontgard.
  • As the world reacted to a temporal disturbance, Dumbledore sent Grindelwald through the Vanishing Cabinet and revealed that Eloise Mintable had returned from the distant past.
  • Sean investigated the Department of Mysteries and concluded that Grindelwald had traveled from 1996 to 1899, while the original Grindelwald had imprisoned himself beneath Newmontgard.
  • Sean found the younger Grindelwald at the Dumbledore house and offered to help him investigate the truth, while arranging for Capen to learn from Old Bathilda.
  • Rosier asked Sean to impersonate the unreachable Grindelwald, and Sean attended an impeachment assembly where Grindelwald remained President.
Chapters 359–385 Summaries Read

Arc 16The Lost Year

Sean uncovered the truth about the Blood Pact and followed Grindelwald’s plan to reconcile his younger and older selves. The Time Incident then erased a year from everyone’s lives, and Sean returned to Hogwarts to help teach Transfiguration.

  • Sean met Andros, rejected the Returners’ demand for a three-year truce, and drove him away from Newmontgard.
  • Sean found Baron Skinner’s Manor and learned from Skinner how the Blood Pact could be broken through betrayal and used to gain immense power.
  • Sean discovered Grindelwald’s memory bottle, learned how Qilin’s Blood could bridge the gap between his younger and older selves, and received a plan to reunite them.
  • Sean found Grindelwald’s hidden island, retrieved his own note and a memory vial from the lake, and brought the Selma Lake Monster and her egg back to his ring.
  • Sean persuaded Young Grindelwald to watch a memory from 1996, and the World Will’s awakening preceded a Time Incident that moved the world from 1993 to 1994.
  • Sean learned that everyone had lost a year while their memories stayed unchanged, then used the lottery rewards to improve his potion skills and inspect his expanded creature habitat.
  • Sean gave Young Grindelwald the Qilin-blood-infused Asparagus Fern, and Grindelwald extracted a memory for Sean to safeguard until he reunited with his older self.
  • Sean returned to Hogwarts after classes resumed, helped Professor McGonagall teach Transfiguration, and warned first-years to follow his safety instructions.
Chapters 386–412 Summaries Read
Volume 4 of 9