I can't tell my wife that I got my mother-in-law pregnant... - On a two-day, one-night trip to a hot spring, I lost control and kept cumming inside her. - Miki Mihama

The movie revolves around a man who gets his mother-in-law pregnant during a two-day, one-night trip to a hot spring. The story explores the complex and taboo relationship between the man and his mother-in-law, as they navigate their desires and the consequences of their actions. The central dramatic tension lies in the secrecy and guilt surrounding their affair, and the potential repercussions on their family dynamics.