"Just one mistake" attacks a celebrity wife. Yuna, a celebrity wife who lives in an upscale residential area with too much time and big breasts, is caught in a secret rendezvous with a young man by a detective hired by her husband. "If you don't want your affair to be reported, become a slave." Yuna succumbs to the detective's threats. As she is trained and abused, Yuna eventually begins to realize the joys of slavery.