Ryo is a sales director crushed by her company's expectations, a punishing workload, a strained marriage, and her incompetent subordinate Haneda. One night, Haneda assaults her while she is passed out drunk and discovers her masochistic side. He then summons her to an S&M hotel during lunch breaks, using hot wax and whips to mix pain with pleasure before fucking her with his brutal cock. The dignified boss is gradually trained into an obscene, submissive plaything no one at work would recognize...