A crew of Martians overhears a radio broadcast of Orson Welles' "War of the Worlds" coming from Earth, and, thinking the Martian fleet is attacking Earth, they land their broken-down ship in a backwater mid-American town. As luck would have it, they land on Halloween and get mistaken for trick-or-treaters. Comedy ensues as the Martians try to get taken seriously.

Douglas Barr
as Sam

Royal Dano
as Wrenchmuller

Ariana Richards
as Kathy

J.J. Anderson
as Brian (Duck)

Gregg Berger
as Klembecker

Wayne Alexander
as Vern

Fred Applegate
as Russell

Patrika Darbo
as Mrs. Vanderspool

Tonya Williams
as Ernestine

William Holmes
as Dumb Guy #1