Seduced by an "older woman" of 21, the hitherto inexperienced Alex is devastated to learn that she thinks of their relationship as casual. When Alex delivers groceries to pretty college senior Stephanie Brooks, there's an immediate intellectual and physical attraction between them. Later, Stephanie phones and invites Alex to an economics lecture. However, the events following the lecture prove more instructive to the teenager. Just when he begins to fantasize about marriage, an unexpected situation brings him rudely back to reality.