After falling asleep while watching the anime Ragnarok, a young man awakens to find himself inside the body of Jill, the final boss of the first season. He quickly recalls that Jill is a disposable pawn, a canon fodder character whose fate is to be brutally killed by the second season's final boss, the Evil God, to demonstrate the new villain's power. Armed with his knowledge of the original story, he resolves to avoid this humiliating demise by destroying the established narrative flow. His primary goal is to survive and rule this world, but his efforts to act as a menacing final boss lead his subordinates to constantly misinterpret his intentions, causing them to worship him as a god and view his every action as a sign of supreme power. This creates a comedic yet tense situation where the protagonist inadvertently builds a fanatical cult of personality while simply trying to stay alive.

The story is set within the world of Ragnarok, a three-part anime featuring a massive power escalation as the series progresses. The main character is Jill, the reincarnated individual who now occupies the body of the first season's antagonist. He is a pragmatic survivor who uses his knowledge of future events to his advantage, carefully playing the role of a powerful lord without revealing his true, ordinary identity. Surrounding him are his subordinates, members of the small but elite criminal organization he leads, who become his unwitting fanatics. They interpret his vague statements and calculated actions as evidence of a grand design, transforming him into a figure of immense reverence and fear across the land.

Notable narrative arcs follow the protagonist's attempts to navigate the world's established powers. He deals with the Church, engages in political maneuvering within the Magic Nation of Magia, and faces a confrontation with the Dragon Emperor of the Draco Empire. A significant turning point occurs when the original protagonist of Ragnarok appears, a character who in the original story was responsible for cornering Jill. Their unexpected encounter forces Jill to walk a fine line, trying to alter the original plot without drawing too much suspicion while dealing with the consequences of his organization's actions being mistaken for heroic deeds by the state.