While driving through the New Mexico Desert during a rainy night, the college students Jim Halsey and his girlfriend Grace Andrews give a ride to the hitchhiker John Ryder. While in their car, the stranger proves to be a psychopath threatening the young couple with a knife, but Jim succeeds to throw him out of the car on the road. On the next morning, the young couple sees John in another car.
Morris Buttermaker is a burned-out minor league baseball player who loves to drink and can't keep his hands to himself. His long-suffering lawyer arranges for him to manage a local Little League team, and Buttermaker soon finds himself the head of a rag-tag group of misfit players. Through unconventional team-building exercises and his offbeat coaching style, Buttermaker helps his hapless Bears prepare to meet their rivals, the Yankees.