The apocalypse breaks out, and 70% of the world's humans mutate into zombies. Lin Mo was betrayed by his teammates and pushed into a group of corpses. Before his death, he was reborn and returned to 72 hours before the end. This time, he was bound to the "evolutionary devouring system" - killing zombies, devouring crystal cores, and evolving infinitely. He lived for three years in his previous life and knew the weakness of every zombie, the time of every zombie wave, and the location of every material. Rebirth + system + poor information. In this life, he will no longer be a pawn. He wants to be the chess player.