In this adult role-play, Ena signs a one-year contract to serve a wealthy man named Shibata as his sex toy, all to save her gravely ill son. Her husband Takeshi despairs over his powerlessness and the fact that he sold the wife he loves for their child's sake. Videos arriving from Shibata each week record every stage of Ena's training; defiant at first, she gradually submits to him completely, even in her heart.