Rika, a busty college student, is dating her classmate Kouki. The two have yet to even kiss, so their relationship is pure. However, contrary to her appearance, Rika"likes older men" and finds joy in following the workers at the construction company that is Kouki's house. One day, while inside Kouki's construction company, Rika picks up some abandoned work clothes and smells them. She then picks up an electric massager that catches her eye and indulges in masturbation. A worker returns and sees her...