The ozone layer suddenly collapsed, plunging the world into an extreme heat apocalypse. Supplies are scarce, order has crumbled, and survivors will stop at nothing to survive. When the protagonist Wei Yu is on the verge of death in the doomsday, he accidentally receives a call from himself a year ago and discovers that he can change the present through the past. Wei Yu is robbed of supplies by Zhang Yongqiang and Xia Huanhuan. He successfully protects himself with his ability, gains supplies, and uses the supplies to fight back against Xia Huanhuan and Zhang Yongqiang.
