Vol. 4The Thunderbird and the Classroom

William and Hermione stopped Arya’s plan to destroy Paris, then returned to Britain as a Thunderbird threatened Hogwarts and the Hogwarts Express. William took over Ancient Runes classes while Babbling prepared to infiltrate Tom Riddle’s organization in America.

  • Harry destroyed Tom Riddle’s diary and body in the Chamber of Secrets, while Riddle escaped William and began seeking Slytherin’s legacy.
  • William and Hermione searched Paris for Newt Scamander’s stolen case, evaded the French Ministry, and traced it to the Louvre.
  • William and Hermione discovered Arya’s plan and stopped the bomb hidden in Norbert before it destroyed Paris.
  • William and Hermione returned to the coast, where their holiday ended when a swarm of Dementors approached William.
  • William and his companions survived the Dementor attack, rescued Anne and Gabrielle from Werewolves, and escaped the island.
  • William and Hermione returned to Britain, and William confronted the Thunderbird as it attacked the Hogwarts Express.
  • William returned to Hogwarts, investigated its dangers and the Deathly Hallows, and helped protect students from attacks.
  • Babbling recruited William to cover Ancient Runes, and William won the students’ applause with a lesson on Hogwarts’ defenses and runic magic.
Chapters 301–400 Read from Ch. 301

Arc 13The Diary and the Missing Case

Harry and William confronted Tom Riddle in the Chamber of Secrets, where Riddle escaped after his body was destroyed and began seeking Slytherin’s legacy. In Paris, William and Hermione searched for Newt Scamander’s stolen case, became wanted by the French Ministry, and realized the case had been lost near the Louvre.

  • Tom Riddle used Ron’s life and the Basilisks hidden in his victims to force Harry into a ritual, but Harry stabbed the diary with the Sword of Gryffindor and destroyed Riddle’s body.
  • Riddle fought William in the sanctuary, but his Killing Curse rebounded from Harry and tore away part of his soul before Riddle escaped and recruited Peter Pettigrew.
  • Harry and Ron survived, and William and Dumbledore concluded that Riddle sought Slytherin’s wand at Ilvermorny while investigating Voldemort’s Horcruxes.
  • Hagrid returned to Hogwarts after his name was cleared, and William secretly planned to eradicate the Acromantulas after learning Aragog had led the attack.
  • Sirius escaped Azkaban in his black dog form after seeing Peter Pettigrew in a photograph and realizing the boy was at Hogwarts.
  • William and Hermione visited Newt in a French prison, learned that Nagini had stolen his case, and discovered evidence of the attack by reviewing the scene with magic.
  • William and Hermione evaded the Aurors, learned more about Nagini and the case from Nicolas, and set out to ask about the Mysterious Circus.
  • Apache reported William and Hermione to the French Ministry, which prepared an ambush, but Hermione realized their carriage was heading to the wrong place and that Newt’s case had been lost near the Louvre.
Chapters 301–32525 summaries Read

Arc 14The Paris Bomb Crisis

William and Hermione uncovered Arya’s plan to destroy Paris and stopped the nuclear bomb hidden inside Norbert, then returned to the coast with their families. Their beach holiday ended when a swarm of Dementors approached William.

  • William and Hermione escaped the Louvre, entered the Paris underworld in disguise, and followed a lead to the Mysterious Circus, where they freed a young Werewolf during the chaos.
  • Vinda Rosier told William and Hermione that Arya had stolen Newt’s case and planned to expose the wizarding world, and Hermione discovered Arya intended to drop an atomic bomb on Paris.
  • William and Hermione confronted the French Ministry to rescue Newt, then raced to Notre-Dame after Arya attacked Paris with a Norwegian Ridgeback and destroyed the Eiffel Tower.
  • Arya revealed her plan to reduce the Muggle population, fought William and Hermione, and vanished after Hermione refused to give her Vinda’s letters.
  • William and Hermione realized the bomb was inside Norbert and petrified the dragon with a Basilisk’s gaze, stopping the countdown before Norbert crashed into Notre-Dame Square.
  • Cregan arranged a public account that concealed the Ministry’s failures, and William and Hermione accepted payment and Norbert’s corpse while Rita Skeeter pursued the story.
  • William and Hermione returned to the coast, where Hermione admitted she had impersonated William and kissed Sophie Costa, and William asked her not to lie to him again.
  • After William rescued Dahei from a giant wave, he met Phoebe and Gabrielle on the beach, and more than a hundred Dementors approached the group with several heading straight for him.
Chapters 326–35025 summaries Read

Arc 15The Thunderbird Pursuit

William and his friends survived a Dementor attack, rescued Anne and Gabrielle from a Werewolf pack, and escaped the Thunderbird’s island. After returning to Britain and boarding the Hogwarts Express, William faced the Thunderbird again as it attacked the train.

  • William drove off the Dementors with his Patronus and trapped a weakened one in a cabinet before the Aurors arrived.
  • After Anne, Gabrielle, and Dahei vanished, William and his companions flew to an island, where Anne and Gabrielle escaped their captors while William fought the Werewolves and rescued them.
  • William saved Mormont and brought the group back to Biarritz, where he negotiated with Cregan and spent two weeks on holiday with Hermione and the others.
  • William and Hermione returned to Britain, where Fudge tried to recruit William to blame France for Sirius Black’s escape and the Dementor attack.
  • William, Hermione, and Anne bought supplies in Diagon Alley, then boarded the Hogwarts Express, where Crookshanks chased Scabbers and Harry learned that his letter to Cho had been misdirected.
  • As the train crossed a storm, William spotted the Thunderbird and organized the students while it struck his protective barrier with lightning.
  • William asked Lupin to hold off the Thunderbird and began chanting Ancient Runes as protective markings spread across the carriage.
Chapters 351–37525 summaries Read

Arc 16William Takes the Classroom

William returned to Hogwarts amid Thunderbird attacks, Dementor patrols, and trouble in Hagrid’s classes while learning more about Arya, Grindelwald, and the Deathly Hallows. Babbling recruited him to cover Ancient Runes while she prepared to infiltrate Tom Riddle’s organization in America.

  • William protected the Hogwarts Express from the Thunderbird and helped Hermione drive away a Dementor after Harry collapsed.
  • Dumbledore gave William the Deluminator and revealed that Arya carried Cleopatra’s soul and was going to Egypt to free herself.
  • William discovered Hermione’s overlapping Time-Turner journeys and helped her hide from her earlier self.
  • William helped rescue students during Hagrid’s Hippocampus lesson and drove away the Merpeople princess after she demanded to marry Cedric.
  • William and Hermione discussed brewing Wolfsbane Potion for Mormont, while Hagrid remained a probationary teacher after Malfoy’s injury.
  • William researched the Deathly Hallows and suspected that Harry possessed the Invisibility Cloak and Dumbledore possessed the Elder Wand.
  • Babbling asked William to cover her Ancient Runes classes and revealed her plan to impersonate him in America to infiltrate Tom Riddle’s organization.
  • William took over third-year Ancient Runes and won the students’ applause with a lesson on Hogwarts’ defenses and practical runic magic.
Chapters 376–40025 summaries Read
Volume 4 of 12
Volume 4 of 12