Inside a fitting room at a clothing store in a certain Tokyo ward, a lesbian saleswoman guides a woman she finds attractive into the world of lesbianism. Unlike male salespeople, she casually touches the woman's body in her lingerie without any awkwardness, and the female customer is completely unguarded. The physical contact gradually intensifies, starting with her breasts and buttocks, before moving on to caress her crotch. The female customer, though initially confused, reacts sensitively to the various feelings of transgression.