A girl who never smiles is tricked by a wicked spa... Using aphrodisiac oils to loosen her private parts, she collapses, loses control, and climaxes. The female college student's end is a descent into a swamp of pleasure massage. (MIDA-527)

A naive and innocent female college student is deceived by a wicked spa. It's her first time visiting a spa. It seems they use aphrodisiacs to activate female hormones and loosen the body during a treatment. Despite her distrust, the girl puts on the treatment clothes they're given. The fabric is small; without covering herself, her breasts and vulva would be immediately exposed. Her young yet mature H-cup body is loosened by a dangerous massage… finally, her vulva opens wide. She falls into the trap of special male-phallus sex treatments, experiencing spasmodic orgasms. Drowning in the swamp of pleasure from these wicked treatments, her hidden masochistic awakening—her abnormal constitution, altered to the point of cervical collapse and incontinence during orgasms, finally breaks down.