Trapped in a missile silo, a small team of scientists, civilians and trigger-happy soldiers battle desperately to ensure the survival of the human race, but tension inside the base is reaching breaking-point, and the zombies are gathering outside.
Felix and Oscar are middle-aged divorcees, one a neat freak and the other an impenitent slob. Together they share a Manhattan apartment, where their differences become hilariously apparent.
When hired gun Tim Strawn (Lee Marvin) kills her rancher father, Cat Ballou (Jane Fonda) becomes an outlaw set on vengeance. Enlisting the help of washed-up gunslinger Kid Shelleen (also Marvin) as well as the handsome bandit Clay Boone (Michael Callan), Cat strikes back at the land-development company that employed Strawn, and eventually targets the assassin himself. Adding to the lively comedic mood of the film are narrative song performances by Nat King Cole and Stubby Kaye.