Four couples engage in swapping in pairs to confirm their love! The forbidden act of infidelity, 'Double Adultery,' how far can they go with just a wall between them?! Competing, the erotic acts escalate! Deliberately letting out lewd moans, provoking each other through the thin wall! Just a few centimeters apart, a wife squirms and gasps with another man's touch right next to her loving husband! Drowning in thrill and pleasure, unprotected sex inside!
