Twin Brother and Sister raised to be very close to each other make love at a party and later made love with each other in their apartment. They found that their love making was genuine and they wanted to continue making love with each other after they graduated from college. She told him that she wanted to have his babies.
A brother is tired of his overly smart but helpless sister. With their parents gone on a trip he discovers her new capabilities. He experiments on her to find out how her brain and body truly interact.