Unemployed youth Su Jin falls into a low point in life and unexpectedly receives a job offer from Heavenly Dao Responsibility Unlimited Company. He has no choice but to accept the mission, carrying special equipment to go to another world, and protect client Fu Qingdai through a global cataclysm. Strange torrential rains trigger environmental mutations, water sources are affected, some people show abnormal changes, the original social order collapses, and people are panicked. Su Jin hides his identity, reserves supplies, explores the truth, must distinguish abnormal people within the time limit, and protect Fu Qingdai to find a safe way out. He gradually discovers that the cataclysm is not a natural phenomenon, and special abilities, human evolution, and cross-dimensional organizations are interrelated. This is a cruel survival test.