三名科学家帮助一只被困在地球上的外星猫科动物修复其受损的太空船，以便返回家园，但他们的努力受到无能的军方官员和外国间谍的阻碍。
Ken Berry
Frank
Sandy Duncan
Liz
Harry Morgan
General Stilton
Roddy McDowall
Mr. Stallwood
McLean Stevenson
Link
Jesse White
Earnest Ernie
Alan Young
Dr. Wenger
Hans Conried
Dr. Heffel
Ronnie Schell
Jake (Voice) / Sgt. Duffy
James Hampton
Capt. Anderson
Howard Platt
Col. Woodruff
William Prince
Mr. Olympus
Ralph Manza
Weasel
Tom Pedi
Honest Harry
