Fourth year of marriage ... Masaya, a husband who loves his wife Mona, but has lost his excitement because of his distorted propensity. Masaya's propensity is "cuckold". Masaya, who wants to make Mona sleep with another man, secretly finds a topical esthetic salon on the internet bulletin board. The esthetic salon has a hidden menu, and it is said that the woman who comes to the store will be caught on camera. Immediately, Masaya makes a reservation and recommends it to Mona, but at that time, he doesn't even imagine that Mona will be hooked...
