At a high-school party, four friends find that losing their collective virginity isn't as easy as they had thought. But they still believe that they need to do so before college. To motivate themselves, they enter a pact to all "score" by their senior prom.
In the 22nd century, a paraplegic Marine is dispatched to the moon Pandora on a unique mission, but becomes torn between following orders and protecting an alien civilization.