Amateurs Arthur and Lisa, siblings by chance, find themselves in a compromising position when they're left home alone. Their curiosity gets the better of them, and they begin to experiment, their bodies betraying their excitement. Lisa's touch on Arthur's hardness sends shocks through his body, while Arthur's hands on her breasts make her gasp. They're teetering on the edge of no return, their taboos threatening to shatter as they explore each other's bodies, their amateur status no match for their growing desire.