Five pairs of mothers and daughters come to the salon with a family discount coupon for a trial beauty treatment. The unscrupulous therapist skillfully tricks them into drinking herbal tea laced with an aphrodisiac to increase their sensitivity. Both mothers and daughters have uncontrollable erogenous zones all over their bodies! He goes back and forth between the mother and daughter through the curtain and commits obscene acts. It's the first time he's seen his mother having sex through the curtain! The daughter obscenely moves her fingers in and out in time with the therapist's thrusts! The aphrodisiac is too effective and the mother and daughter are in agony. What will happen to the parent-child relationship in the future...?