Mother-in-law Chisa who remarries her husband and lives with his stepchild Yoshio. My husband is not working alone. Lately, I've been perplexed by myself for being conscious of Yoshio as the opposite sex. However, Yoshio secretly spends his nights with Chisa and spends his days in obscene fantasies with his friends! Will that feeling eventually bring them together? Chisa's stupidity that gets drunk with a young body.