Office worker Miku is usually a plain, incompetent worker at her company, and an unremarkable presence. But Miku's secret identity is that of a call girl who uses her big breasts as a selling point! One day, she receives a request and heads to a hotel, where she finds her unexpected boss waiting for her... At first, Miku tries to hide her true identity by pretending to be someone else, but an unexpected comment gives her away. "If you don't want anyone to know that you're doing this kind of work as a side job, then do as I say." She follows her boss's orders and ends up getting penetrated raw at a call girl service where sex is prohibited... Her boss, who she thought was plain and dull, is so excited by the voluptuous, well-shaped breasts that he sees for the first time that he ends up cumming inside Miku over and over again with his rock-hard cock...