Chie's husband is a trading company employee who travels overseas and has been away from Japan for a while. - On the other hand, his brother-in-law, Naoya, does not have a regular job and lives with Chie, but due to his love of adult entertainment, he is in debt, and he is f** to take part in a plan to get Chie to work at an anal soap. - Chie falls into a trap, and with the clever guidance of Mizushima, the owner of an adult entertainment shop, she develops an anus and is taken as a customer as an anal soap lady.