The Harada and Ito families are two couples living in separate houses. Harada Tetsuo and Ito Ryuta are boss and subordinate at work. Their wives, Nanase and Ayano, are both dissatisfied with their husbands' sex lives. So they come up with the idea of swapping husbands...
| Actor | Role |
|---|---|
| MMaria AsakuraNanase Harada | Nanase Harada |
| KKyôko KazamaMariko | Mariko |
| HHideki NishiokaRyuta Ito | Ryuta Ito |
 Seiji NakamitsuTetsuo Harada | Tetsuo Harada |