​Yuki, a responsible tutor, finds herself in an unexpected situation when three college students she was supposed to teach take control. Ryo, Ri, and Koji, typically found partying and playing video games, have a different plan in mind for their study session. They restrain Yuki with ropes and a ball gag, forcing her to surrender her freedom. As the tutoring turns into something else entirely, the students explore with various toys and begin teasing Yuki’s body. Despite her initial resistance, Yuki’s flushed face betrays her growing pleasure as she succumbs to the desires awakened within her.​