Married female massage therapists working in a rural hot spring town. Within tight-knit local relationships, the risk of infidelity is high and romantic opportunities are limited. Under these circumstances, the women's pent-up desires have grown into overwhelming sexual frustration. Hearing rumors of this town, a man arrives and begins making sexual advances toward the married women. Their encounters are secretly recorded with two hidden cameras. The women, as if they had been waiting for such an invitation, readily give in to his advances. Driven by insatiable lust, they continue seeking new pleasures one after another...