The Wakabayashi family is a happily married couple in their fifth year of marriage. When the wife, Yurina, starts worrying about her recent weight gain, her husband introduces her to a slimming esthetic salon. Driven by a desire to become thin and beautiful for her husband, she visits the salon, only to find it is a corrupt establishment whose hobby is developing women's anals and stealing them away... What was supposed to be a simple colon cleanse turns into an enema addiction!