In the confines of their shared apartment, two sisters, both virgins but one a secret deviant, find themselves alone with their stepbrother. The younger, a innocent beauty with a luscious ass, has never known a man's touch, her pussy untouched and tight. But her older sister, a secret slut, has other plans. She guides her younger sister's hand to their stepbrother's thick, hard cock, showing her how to stroke it, how to make it leak pre-cum. The younger sister, filled with religious guilt, can't resist the temptation of her stepbrother's massive dick, and soon, they're both riding him, their tight pussies sliding up and down his shaft, their bodies filled with hot, spent fluids as they collapse in post-coital remorse.