After the global catastrophe, zombies are rampant and resources are scarce. The protagonist Shen Mo is accidentally bound to the "dog licking system". The system rewards survival materials by issuing "dog licking" tasks (such as offering water to the goddess Lin Yue and confessing to the goddess Lin Yue) to help him survive. During the execution of the mission, Shen Sheng's relationship with Lin Yue gradually developed from unrequited love to a bond of mutual support. The materials rewarded by the system are not only used for survival, but also for exploring the doomsday world. As the plot progresses, Silence discovers that there are "mutated copies" hidden behind the system, and these copies are full of unknown challenges and dangers. In the process of exploring the dungeon, he gradually uncovered the truth about the system mutation and the larger conspiracy behind the catastrophe.
