
In his past life, the protagonist, Zane, still chose to treat others with kindness when The Apocalypse arrived. However, his kindness was exploited by villains, led by Mr. Hawthorne, which ultimately led to his and his friend's deaths. Before dying, Zane was unexpectedly reborn to the day before The Apocalypse, retaining his previous memories. After his rebirth, in order to survive in The Apocalypse, Zane uses game-like activities to take revenge on the villains, including Mr. Hawthorne.