All of humanity is transported to an endless ocean to fight for survival, starting with nothing but a small wooden raft. By chance, Chu Chuan unlocks a special "Log Out" system that allows him to return to an uninhabited Earth and stockpile supplies. Using modern equipment from Earth, he rapidly develops his resources, builds wooden houses, explores resource islands, and constructs a gigantic steam-powered raft. Extreme cold storms and black tides follow one another, while sea beasts roam the waters and raiders run rampant. Armed with modern military weapons and industrial equipment, Chu Chuan struggles to find his missing younger sister while gathering survivors to fight natural disasters and sea monsters. His extraordinary ability was designed from the very beginning to transplant Earth's civilization into this desperate ocean.