A young man in a bar is boasting of the size and shape of his sister's breasts to a couple of friends. He takes his mates home to see his sister, but before she is prepared to display her wares she requires a small cash payment. When this has been attended to, she proudly lifts her jumper and allows her fantastic orbs to swing free. The sister's girl-friend also happens to be present, so the viewing activates a fast-moving and uninhibited orgy, in which the young man's wildest dreams are realized: to fuck his sister.
