Akari suffers from severe back pain due to the fatigue of daily housework. Her kind husband is concerned and urges her to go to the hospital, but she is busy with housework and puts it on hold. One day, her husband finds a flyer for a mobile massage parlor in the mailbox. It is cheap, and if there is no effect, they won't charge you. As her husband is very worried, Akari decides to call the massage parlor. Little does she know that it is a trap set by a despicable masseuse, and that she will end up orgasming over and over again...