When Captain Vek Tempus and his alien Space Squad crew get into an altercation with the evil Lady Gravatox, they're forced to escape through a wormhole and make an emergency landing on Earth. Once there, they struggle to find a way to make contact with their side of the galaxy, which proves difficult since everyone they meet assumes they're just people in ridiculous costumes.

When Jackson Axelrod gets an offer to be the spokesman for a new national park, he recruits some friends for a nostalgic camping trip. Soon, tensions within the group turn to terror as the people realize that they are being hunted for sport.

When Derek and Jenna discover a time machine, their peaceful day-out in the park is about to turn into the longest day ever.