Rika was asked to be a nude model for her husband's art studio, which catered to students preparing for exams. There, she met Yuuki, a young man aspiring to study art. Both were nervous as it was their first time being a nude model and seeing a nude woman, respectively. However, as they got closer, Rika's body temperature became apparent to Yuuki. The affair between the married woman and the young man in the studio gradually escalated...