Yi Ran, who is struggling to survive at the bottom of the society and regards negative reviews as a means of catharsis and rights protection, gets a chance to experience a five-star hotel from the sky. He meets Xiao Mucheng, the manager of Yingman Hotel, who cannot tolerate "bad reviews" in the eyes of perfectionists. The two stand on the natural opposite sides of consumers and businesses, each competing to achieve their goals. Yi Ran transformed from a "little wanderer" with no fixed abode to a "sleeper tester" in a five-star hotel overnight, starting a life like an ordinary girl's dream, but all of this was due to the strategies of the atypical boss Xiao Mucheng... In the battle of wits and courage, both of them finally fell, and the "Yingman Hotel is sweet everywhere" began.