Drowning... drowning... Once you're hooked, you can't escape the swamp of creampie sex with a married woman. Nanami has been married for six years. She starts working part-time to help with the family finances. She is constantly being insulted at work and her husband ignores her, so she spends her days feeling depressed. Kenji, a college student colleague who is worried about Nanami, invites her out for drinks. The two finally enter into a forbidden relationship... The more they embrace, the more beautiful... and the more lascivious the flower of infidelity blooms.