Kaori Nishio, the female president of an insurance company, is forced by the chairman to engage in sexual favours in order to turn the company around. While her stepsister , Kotomi Asakura, who was hired through a connection, is having raw sex with a client, Nishio Kaori fucks her favourite employee in the office! She was getting contracts smoothly, but she is suddenly called by the client's president and for some reason is forced into lesbian play with Kotomi! Even after realising that Kotomi has tricked her, it's too late! Kaori, who has become a sex slave, is thoroughly violated by a male employee and her stepsister Kotomi in a pleasurable 3P fuck!