地球研究所向太空发离子光束，不料却把其它星球的动物及妖魔吸到地球来，最后还是透过星际鸭人把妖魔给打败。
Lea Thompson
Beverly Switzler
Jeffrey Jones
Dr. Walter Jenning
Tim Robbins
Phil Blumburtt
Ed Gale
Howard T. Duck
Chip Zien
Howard T. Duck (voice)
Tim Rose
Steve Sleap
Peter Baird
Mary Wells
Lisa Sturz
Jordan Prentice
Paul Guilfoyle
Lieutenant Welker
Liz Sagal
Ronette
Dominique Davalos
Cal
