Mayu is a married bank employee who thinks she is having an affair with a fuck buddy, but the man was secretly hired by her husband to seduce her and deliver videos of every encounter. After a long break, her strong sex drive sends them straight to a love hotel, where he secretly creampies her despite being told not to and disguises the next load by cumming on her stomach. Later she gives him a blowjob in the car, then dresses in a sexy Chinese outfit at the hotel and accepts a blindfold and cuffs. He secretly brings in a friend for a cheating-themed swap. Mayu realizes midway, removes the blindfold and gets furious, but they keep fucking her; the friend also sneaks in a creampie before covering the second load by cumming on her tits. She eventually makes peace with a blowjob, only to overhear the friend mention her husband and discover the entire arrangement, putting the narrator's paid scheme in jeopardy.