Ren Amamiya, having thought that his ideals to save humanity, fell into the stark reality that his actions as Phantom Thieve were meaningless when he decided to betray his friends. Dying in the Velvet Room after inciting his execution, the Ruinous Powers bring him back to life as a second chance to take revenge on the society that took everything from him, as the Trickster of Chaos

The distorted flow of Metaverse thoughts attracts attention on a dimensional plane known as Warp, a dwelling inhabited between ruthless dark gods and their deadly daemons. The Phantom Thieves are the only hope that humanity has to face this new threat, even if it means dying in the attempt.