Since her cohabiting stepfather, Ippei, retired, Yumi's wife spends her days alone with him. Ippei, a womanizer with bad habits, starts harassing Yumi. 'I never noticed before, but Yumi has a great body...' Ippei's stalker-like behavior escalates over time. Peeping at Yumi while she changes or bathes is not enough to satisfy his desires, and eventually, he forcefully pushes her down…
