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 Horneffas Rick Heller
Helen Shaveras Margaret Heller
John C. McGinleyas Max Carr
Peter Boyleas Gus Charnley
Leif Tildenas Katie The Gorilla
Gregory Itzinas Walter Mallinson
Titus Welliveras Sergeant Bo Markle
Thomas F. Wilsonas Det. Lou Greenberg (as Tom Wilson)