In the stifling heat of a shared bedroom, siblings Michelle and James find themselves alone, their parents out for the night. Bored and curious, they start to explore each other's bodies, Michelle tentatively touching James' hardening cock through his shorts while he caresses her breasts. Their explorations deepen, Michelle sucking James' cock until he's rock hard, then straddling him to ride him, her tight pussy enveloping his thickness. They fuck hard and quiet, trying not to be heard, their taboo passion building with each thrust.