The girlfriend and Lin Yan gradually drifted apart, and former friends placed him in a dangerous situation. Amidst the desperate plight, Lin Yan unexpectedly awakened the Zombie Evolution System. Steadily growing by devouring and training from a low-tier form, he made acquaintance with partner Liu Ruyan, and teamed up with base member Su Qingxue to form a reliable survival squad. As his own strength continuously advanced, he also gradually uncovered the long-sealed past origins of this world.