Hiyori, a married woman, was enjoying drinking online with her husband and classmates, but was surprised when her teacher suddenly invited her as a guest. - This was because he had loved the teacher when he was a student and had confessed his feelings to her and formed a relationship with him only once. - Moreover, he seems to have gotten divorced and is now single... - Their love is rekindled when they meet again after a long time, forgetting their guilt towards their husbands, and passionately seeking each other for immoral sexual intercourse! - However, the affair is discovered...