Ana and Paulo, a seemingly ordinary Brazilian couple, invite their close friend, Roger, over for dinner. As the night progresses, Ana's sultry laughter and suggestive glances hint at an underlying tension. While Paulo is in the kitchen, Ana takes Roger's hand and leads him to their bedroom. She calls him "puta," a naughty nickname, as she unzips his pants, revealing his eager cock. Ana, the "esposa piranha," devours him, her hunger for forbidden flesh insatiable. Paulo returns, catching them mid-act, but Ana's skilled mouth keeps Roger hard, making Paulo the cuckold, or "corno," in this steamy Brazilian threesome.