If they knew the city was this crazy, they would have stayed in the asylum.

Michael Keaton heads an all-star cast in this wild and crazy comedy about four mental patients who get seperated from their therapist on the way to a baseball game.

Billy (Keaton), a pathological liar with a violent streak, finds himself on the loose in New York City with his fellow group therapy patients: Henry (Christopher Lloyd), a neat freak, Jack (Peter Boyle) a former advertising executive who thinks he's Christ, and Albert (Stephen Furst) a near catatonic couch potato. Faced with the task of rescuing their missing doctor from a pair of crooked cops, the group finds themselves sharing a series of hilarious adventures in this farce the Washington Post calls an "irresistably nutty buddy movie."