A small but growing Texas town, filled with strange and musical characters, celebrates its sesquicentennial and converge on a local parade and talent show.
A group of rock-music-loving students, with the help of the Ramones, take over their school to combat its newly installed oppressive administration.
Simon Watterman, a space archaeologist, discovers the "Munchies" in a cave in Peru. Cecil Watterman, Simon's evil twin brother and snack food entrepreneur, kidnaps the creature. What Cecil does not know is that the creature, when chopped up, regenerates into many new creatures and are they mean!
