At the end of their monotonous daily lives, the two seek relaxation on a hot spring trip. Maki and Mirei, hoping to relieve the usual fatigue from household chores, head out together for a long-overdue hot spring getaway. However, they unknowingly arrive at an inn that prohibits mixed bathing. Arriving during an off-peak hour, they feel safe assuming the place is empty—only to be met with poor timing as male guests enter the bath. Intrigued by the sight of these married women, the men mischievously expose their dicks, flaunting them openly. Excited by the sight of a dick after so long, the two women become wildly aroused. Their pent-up desires explode as they start grinding their hips, aggressively riding the men in passionate cowgirl positions. Their intense, fervent performance drives the male guests into uncontrollable excitement.