After losing her husband, Satsuko runs a boarding house while struggling with pent-up sexual frustration. She uses minor infractions—students' poor grades, curfew violations, or catching them in compromising situations during showers—as excuses to scold them, deliberately adopting a provocative and seductive demeanor. Her behavior, reminiscent of a lewd milf, adds a sensual tension to daily life at the boarding house. Her suppressed desires and frustrations begin to affect the residents, intensifying the atmosphere into one charged with erotic energy.