When a luxury cruise ship sinks, maintenance worker Gu Lichuan is stranded on a deserted island with a ship full of elderly passengers. The company's promised rescue turns out to be nothing but lies. Fresh water, cold snaps, and packs of wolves threaten their lives one after another. He establishes rules for survival on the island: no work, no food, and caring for the elderly earns work points. When an armed tycoon demands that he hand over the evidence, he grips the maintenance logbook filled with records of corruption. This time, he intends to survive and bring the evidence home.