On a distant planet, descendants of a crashed spaceship are subjected to mysterious forces that cause them to age and die in just eight days. They must also live in caves to escape the bitter cold of night and the killing heat of day. One young boy is determined to find his way back to the ship that brought them there. But how will accomplish this in the short time left to him?

High school senior Bobby Chrystal fails his French class, which will block him from entering Yale. His rich, authoritarian father hires an attractive 29-year-old to tutor Bobby over the summer and help him pass a make-up exam. While Bobby's friends lead him away into strange excursions aimed at losing their virginity, Bobby finds all the extracurricular activities he needs with his new tutor.