A decade after a meteorite strikes the earth, Donghai City suffers its biggest monster attack ever. Zuo Fan, known as the "traitor's child," is the most useless among all the star warriors in the reserves, and manages to escape. While hunting monsters on the battlefield, he finds himself wrapped up in a new scheme, and awakens a mysterious system. From that moment on, he embarks on a journey to uncover the truth behind his father's betrayal and ultimately, to save the world.