Kinmichi Trading, a major supermarket chain based in Tokyo, accidentally received a shipment of poisonous mushrooms. In a panic, they recalled all products, but their reputation plummeted overnight. Naturally, their fury was directed at the supplier in Kansai, and Kinmichi forced the supplier's husband and wife, the Chikazawas, into dogeza as punishment. Yet when Kinmichi laid eyes on the husband's beautiful wife, Mayumi Chikazawa, he became consumed by a secret desire to possess this married woman for himself.