The Kazama family and the Sasayama family live in the same apartment. Both families are ostensibly on good terms, but her wives, Nozomi and Yumi, were conscious of their outstanding beauty and glamorous plump body. One day, Nozomi sees her husband's Atsushi and Yumi confused. Nozomi, who is shocked by her, accepts it when Yumi proposes to exchange her sleeping. The two heat up and develop a fierce battle to win over their husbands!
