Henry Winkler plays Jack Dunne, a troubled Vietnam veteran who has a history of mental problems. He fools his doctor and escapes from the hospital with the intention of starting a worm farm with his fellow veterans. When Jack hops aboard a bus he meets Carol Bell (Sally Field), who is running away from her impending wedding day. While he initially irritates her she soon finds it hard to refuse to invitation to help out on the farm when his plans start to go awry.