Anri Mizuna is a Japanese hospital nurse who seems haunted, tortured and constantly ill at ease - but by what? She has bizarre sex dreams and wakes up in a cold sweat. The doctor she assists wears dark sunglasses. That is, until one day, he removes the glasses, revealing his demonic, yet seductive eyes.

Kumiko becomes pregnant with Seiji's child and they get married. There is a significant age difference between them, almost like parent and child. Seiji's son from his first marriage, Mamoru, is only four years older than Kumiko. The young stepmother and son soon begin to cultivate a forbidden love...