Marina, a full-time housewife, was once a teacher before getting married. One day, she ran into her former student, Seto. Seto lost his job and fell into depression. Marina consoled and encouraged such a student. However, Seto began to unleash a dark passion that conflicted with her kindness. Marina, a teacher who should have cut off her thoughts, instead appeared before her. During the day, Seto secretly watched Marina, a married woman, and projected his thoughts onto her. Marina, who vehemently opposed this, nevertheless succumbed to Seto's wildness.