Praised as heroes of the people, the Phantom Thieves are at the peak of their popularity--that is, until the untimely, gruesome mental shutdown and death of Haru's father, the CEO of Okumura Foods, during a live TV press conference. Popular sentiment quickly turns against the Phantom Thieves, decrying them as criminals and murderers. To play the role of model students, the group takes on running Shujin Academy's culture festival, where they hope to invite detective Goro Akechi to their school and glean information from him. But this leads to a new, unexpected Phantom Thief joining the crew...