Habits are something very frightening; they are even scarier than a disease because a disease can be treated, but there is no special remedy to help people break a habit. The wives in the film are typical examples; just because of the habit of undressing when sleeping and getting into their familiar bed every night, they caused a truly disastrous consequence. That day, Ren Usui's best friend came to visit, and they organized a small party, but because they drank a little too much and there was only one bed in the house, the Usui couple had to sleep on the floor while the bed was given to the husband's friend. In the middle of the night, Usui suddenly woke up feeling very uncomfortable because usually she only wore her underwear when sleeping, but today she had to wear full clothes because there were guests. At that moment, still half-asleep, she unconsciously took off all her outer clothes and jumped onto the bed to sleep next to her husband's friend without realizing it. This made the other friend wake up, accidentally saw that her slender body was a little drunk in her body, so she couldn't control herself, he began to slowly attack below her wife...