Adult virgin Manabu has long been in love with his best friend Makoto's mother, Saki, but she quickly rejects his confession. Unable to forget her, he visits a married-woman soapland hoping to move on—only to discover that Saki herself is his attendant. She urges him to choose someone else, but his desperate pleading finally wears her down. From that day forward, Manabu returns to the shop obsessively, and the pair fall into a routine of constant sex and creampies wherever desire takes them.