Huahua begins a new job at the sauna where she meets the middle aged owner, A-bu, and art student, Xiao Chi.  After a night of heavy drinking in the sauna, the group awakes the next morning to discover they have swapped bodies.

The sauna staff are thrust into living out each others day as their commitments arise like Xiao Chi's art class and opening the sauna.  The group are continuously distracted by their new bodies.