Sonoka is a female college student suffering from joint inflammation. Concerned about not being able to have sex with her boyfriend, she goes to a massage parlor she found online that advertises a "water-draining treatment." However, it turns out to be a trap set by a dishonest chiropractor, who tricks her into an incontinent orgasm, making her squirt and urinate with a "squirt, squirt, squirt!" sound. Her body is wrecked by the relentless developments under the guise of treatment, and now she's a climax machine that splashes with the impact of creampies. She betrays her boyfriend and descends into a total pervert, dribbling and begging for creampies...