Brazilian wife, fed up with her husband's lackluster performance, takes matters into her own hands, inviting a well-endowed stranger to their home for a sizzling afternoon tryst. The unsuspecting husband, clueless about his wife's infidelity, returns home to find her in the throes of passion, moaning and writhing on their bed. Shocked and humiliated, he watches as the mysterious lover pounds his wife's eager pussy, making her scream with pleasure. The husband, now labeled a "corno" (cuckold), is forced to confront his wife's adultery and his own role in their crumbling marriage.