Rick Heller is a juvenile delinquent who keeps getting himself into trouble. To keep him out of trouble his mother puts him to work cleaning the cage of a gorilla named Katie which she is teaching to communicate through the use of sign language. When the owner of the gorilla takes her back to become a flea market freak Rick takes it upon himself to break Katie out and take her on an adventurous journey to get her out of the country.
Wil Horneff
as Rick Heller
Helen Shaver
as Margaret Heller
John C. McGinley
as Max Carr
Jean Marie Barnwell
as Lacey Carr
Peter Boyle
as Gus Charnley
Gregory Itzin
as Walter Mallinson
Titus Welliver
as Sergeant Bo Markle
Thomas F. Wilson
as Det. Lou Greenberg (as Tom Wilson)
Marvin J. McIntyre
as Bob the Paramedic
Alan Ruck
as Dan Woodley
Janet Carroll
as Judge Billings
John Procaccino
as Ed Price