While scouting a campsite for their school club activity, a group of beautiful girls is suddenly targeted by a man. Unaware, they are made to drink tea laced with a diuretic, and when they attempt to relieve themselves outdoors, they are abruptly caught in forced open-leg restraints, their cunts exposed. Unable to resist the urge, they begin gushing streams of urine. With their defenses down, a large cock is thrust into their bare pussies, driving them to orgasm with exaggerated ahegao expressions. The next target becomes their close friend—forced to drink the diuretic by her own companion, she ends up pissing on the face of the friend who just fucked her. Trembling in humiliation, one after another they experience involuntary peeing and climax in succession.