In a world filled with flesh-eating zombies, lawlessness prevails, leaving people to fend for themselves. Luckily, Yohan has an unusual advantage. Having lived through this apocalypse once already, he travels back in time six months before the initial outbreak to gather supplies and gear up for battle. However, the undead are not his only concern. He faces threats from bandits, gangs, and other groups vying for power. When his knowledge of the past falters, Yohan realizes he must confront both the living and the dead to survive.