The movie tells the story of Lao Wu, an ordinary bath master in a small town in the northeast with a history of more than 30 years in the "Minle public baths", who has excellent skills and an optimistic personality. However, in order to save his son Binbin, who is in a coma after a car accident, Old Wu goes south to Shenzhen to take over the "Star of the Sea" bathing center, and his three old workers work side by side again. A series of ludicrous stories happened in the modern metropolis in the south