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.
| Actor | Role |
|---|---|
 Douglas BarrSam | Sam |
 Royal DanoWrenchmuller | Wrenchmuller |
 Ariana RichardsKathy | Kathy |
| JJ.J. AndersonBrian (Duck) | Brian (Duck) |
 Gregg BergerKlembecker | Klembecker |
| WWayne AlexanderVern | Vern |
 Fred ApplegateRussell | Russell |
 Patrika DarboMrs. Vanderspool | Mrs. Vanderspool |
 Tonya WilliamsErnestine | Ernestine |
 William HolmesDumb Guy #1 | Dumb Guy #1 |
 Kevin ThompsonBlaznee | Blaznee |
| JJimmy BriscoeCaptain Bipto | Captain Bipto |
 Tony CoxPez | Pez |
 Debbie Lee CarringtonDr. Ziplock | Dr. Ziplock |
| TTommy MaddenGiggywig | Giggywig |
| JJeff WinklessCaptain Bipto (voice) | Captain Bipto (voice) |
 Bruce LanoilPez (voice) | Pez (voice) |
 Joe AlaskeyDr. Ziplock (voice) | Dr. Ziplock (voice) |
 Tony PopeGiggywig (voice) | Giggywig (voice) |
| PPatrick Read JohnsonCommander / Enforcer Drone (voice) | Commander / Enforcer Drone (voice) |
 Kirk R. ThatcherShortstuff (voice) | Shortstuff (voice) |