People of Earth: Your planet is about to be destroyed... We're terribly sorry for the inconvenience.

After Stanley Putterman installs a state-of-the-art satellite dish in his backyard, a strange monster leaps off the screen and needs to feed on humans for survival. The Putterman children Sherman and Suzy—along with Suzy's metalhead boyfriend O.D.—are left to figure out what to do.