When I returned home from a business trip a day earlier than planned, I found my wife having sex with a man she didn't know in our house, which had turned into a sex room. Tsubaki Sannomiya - Sannomiya Tsubaki

The movie revolves around a husband who returns home early from a business trip to find his wife engaging in infidelity. The story explores the themes of marital betrayal, desire, and the complexities of relationships. As the plot unfolds, it becomes clear that the wife's actions are driven by her own desires and needs, which are not being met in her marriage.