A week before the doomsday fog descends and the town falls into chaos, Blake, a popular sports student, is reborn. He recalls how he bullied Eli, a quiet genius otaku, in the school gym safe zone in his previous life, only to be abandoned by Eli and killed outside the school during a monster tide. He finally realizes that Eli, the most looked-down-upon person, was the one who mastered the doomsday rules and survived till the end. To survive and rewrite his tragic fate, Blake decides to approach Eli and seek his protection. But Eli also retains past memories and clearly remembers Blake’s bullying. Blake tries to make amends, stockpiles supplies, trains classmates, and strengthens the campus, despite Eli’s coldness. They gradually become an unlikely but powerful survival pair—one good at strategy, the other at combat. However, Blake discovers Eli deliberately chose to climb to power by sacrificing others. In the final battle, Blake convinces Eli that protecting others is strength, and they join forces to defend the campus, rewriting their tragic past.
