The wife's flirtatious behavior secretly behind her husband's back is cheating with a sleazy boss. Noticing that his wife Shinoda has been showing many strange symptoms recently, the husband decides to buy an invisibility potion to easily observe her suspicious activities. He guesses correctly; she immediately calls her boyfriend pretending to be on a business trip. At this moment, he realizes that she has been cruelly deceiving him. He is even more surprised when her boyfriend comes back. The two go into the room and start making love, his anger reaches its peak but he can only stand there in embarrassment and fear of losing his stable job. He tries to calm his anger by masturbating.