Masashi is madly in love with Yuko, a married woman who works at the same family restaurant. The two of them suddenly become close through a sudden incident, and they start doing naughty things while working, hiding from the prying eyes of others. Although they know it's wrong, they can't control their desires, and they devour each other's bodies like animals. In the empty restaurant in the early morning, Yuko's seductive breathing and the lewd sounds of her sloshing echo through the restaurant...