Recaps

Li Weide and Tom uncovered Slytherin’s Study and learned that a creature might threaten Hogwarts, then brought their findings to Dumbledore and Dippet. Over the Christmas holiday, Li Weide harnessed a Dementor to strengthen himself while Tom mastered the Patronus Charm, and the adults prepared to investigate the Chamber.

• Grindelwald began cultivating students and proposed a new class, while Li Weide enlisted Tom to help keep students from falling under his influence.
• Li Weide and Tom entered Slytherin’s Secret Chamber, passed its trials, and discovered Nokoto Gaunt’s letters and remains.
• Tom and Li Weide found Slytherin’s Study and learned of a creature intended to purify Hogwarts, along with research on the Blood Moon Curse and Nagini’s condition.
• Li Weide and Tom reported their discoveries to Dumbledore and Dippet, who agreed to investigate and keep Grindelwald uninformed.
• Li Weide completed an improved converter and persuaded Grindelwald to provide a Dementor, which he controlled with a Goblin Collar and used to collect Residue.
• Li Weide brought the Dementor to Tom, who practiced the Patronus Charm and produced a powerful Patronus after several days.
• Li Weide had his friends practice near the Dementor to gather Benign Residue, then sent it back to Azkaban as Dumbledore and Dippet located the Chamber entrance.

Li Weide killed the Basilisk, encountered Salazar Slytherin’s ghost, and helped Nagini regain her human form. As Grindelwald’s reforms loomed, Li Weide developed weapons and trained with Dumbledore for the conflicts ahead, while Nagini returned to the people from her past.

• Dumbledore and Headmaster Dippet visited Tom Riddle, then brought him and Li Weide to Hogwarts to enter the Secret Chamber and confront the Basilisk.
• Li Weide killed the Basilisk, and Headmaster Dippet asked him to graduate early, but Li Weide chose to keep studying and learn to control his power.
• Li Weide fought Salazar Slytherin’s ghost in an illusion, challenged his bloodline beliefs, and learned that Slytherin had awakened after more than a thousand years as a ghost.
• Li Weide made a deal with Slytherin to help recover his missing remains and uncover the circumstances of his death, then worked with Senior to treat Nagini’s Beast Soul.
• Li Weide and Senior removed the Beast Soul’s negative emotions and joined its soul power to Nagini’s human soul, allowing Nagini to regain her human form and join Li Weide’s cause.
• Li Weide researched combat equipment with Slytherin, demonstrated his Battle Puppets to Tom, and planned to breed Basilisks for protective uniforms and restorative potions.
• Dumbledore trained Li Weide in the Room of Requirement, defeated him in a duel, and ordered him to spar every day.
• Nagini arrived at the Hog’s Head, where Aberforth recognized her and took her to the back of the tavern.

Li Weide saved Aurelius by removing the Obscurus’s destructive emotions, then studied the creature and developed new ways to help Slytherin. Strange magic in the Forbidden Forest caused encounters with counterparts from parallel worlds, and the arc ended with Li Weide and Slytherin questioning whether Slytherin had ever truly died.

• Li Weide removed Aurelius’s destructive emotions and helped Dumbledore and Aberforth extract the Obscurus, but its residue overwhelmed him until Grindelwald helped remove the magic.
• Li Weide studied the Obscurus with Slytherin, returned Ravenclaw’s Diadem to Helena, and created a Wizard Robe that let Slytherin feel and use magic.
• Li Weide developed plans for legal Basilisk farming with Slughorn and Tom while Grindelwald brought dangerous Dark Creatures into the Forbidden Forest for student assessments.
• After centaurs clashed with Grindelwald’s people, Dumbledore and Grindelwald found strange, chaotic magic around the camp and reports of a person who seemed not to exist.
• Li Weide and Dumbledore investigated the Forbidden Forest and encountered duplicate versions of themselves and others, including a Grindelwald who wielded a second Elder Wand.
• Li Weide theorized that the Dark Creatures had caused parallel worlds to overlap and that counterparts and memories could be exchanged, while Dumbledore ordered the creatures dispersed.
• Li Weide determined that a senior female student’s Nightmare Magic had separated her soul from her body and that a parallel-world version of her body had replaced the original.
• Li Weide told Slytherin about the incidents, and they wondered whether Slytherin’s body might still be alive after he demonstrated a spell from a later era.

Li Weide took over the design of Grindelwald’s student trials, making them safer while building magical puppets and testing Tom’s abilities. After Tom cleared the seventh-year challenge, Li Weide bought a house in Knockturn Alley to use as a laboratory.

• Li Weide and Slytherin found Slytherin’s grave empty, and Slytherin agreed that the coffin may have sealed his soul before leaving to seek clues about his past.
• Dumbledore discovered Slytherin and Li Weide, agreed to protect Li Weide, and began training him and Tom with Slytherin’s guidance.
• Li Weide took the Elder Wand from Grindelwald’s summoned counterpart and negotiated control over the trial designs in exchange for helping Grindelwald obtain the wand.
• Li Weide and Dumbledore persuaded Grindelwald to remove deadly creatures, improve rescue measures, and replace some threats with Battle Puppets.
• Li Weide built magical puppets and a Basilisk Clone named Snik, while Tom prepared for the practical trials and Li Weide developed a guide to the challenges.
• Tom cleared the seventh-year trial by overcoming its obstacles and transforming the final puppets’ guns into snakes, though the ordeal badly injured him.
• Tom recovered with an antidote, received a spellbook from Grindelwald, and was cheered at the end-of-term feast for completing the challenge.
• Li Weide bought a Vanishing Cabinet and a dilapidated Knockturn Alley house to establish a laboratory, then kicked open a neighbor’s door and announced a robbery.