He receives a call from Monaka, a student about to graduate, saying she wants to discuss something with him. Monaka then visits his house and confesses her love to him. "Teacher, can you just forget about your wife for today?" Although he is confused by the passionate kiss from his student, his reason gradually breaks down. The two of them make love all night long. When morning comes, he wakes up to find that Monaka is no longer there...