The eldest son, Taro, and the second son, Kazuya, have returned to their parents' home. Taro's wife, Yoshie, and Kazuya's wife, Shizuka, also got together and the family house became lively for the first time in a while. Shizuka, who consulted Taro about Kazuya, who didn't get a regular job, was attracted to Taro. On the other hand, Kazuya likes Yoshie, who watches over him kindly. Such brothers could not be on good terms, and even more desires for each other's brides. Kazuya secretly devours her grace, and Taro secretly devours her Shizuka... However, the secret under the same roof is soon discovered by both of them...
