Rena, a new graduate office lady who has just started living with her boyfriend, hurts her waist after falling at work and calls a dispatch massage therapist, Okamoto. His friendly treatment was supposed to be for medical purposes at first, but as the pleasant massages using powder and oil are repeated, the boundary gradually becomes blurred. While being supported by her boyfriend, Koichi, Rena finds herself unable to distance herself from Okamoto's techniques, and eventually, despite it being supposed to be a one-time thing, she crosses the line and drowns in a physical relationship.
