Ajax the killer gorilla has escaped from the zoo. Donald's nephews dress up as a gorilla, but soon Donald encounters the real gorilla, and they chase each other until the radio broadcasts instructions for subduing Ajax.
| Actor | Role |
|---|---|
 Clarence NashDonald Duck / Huey / Louie / Dewey (voice) (uncredited) | Donald Duck / Huey / Louie / Dewey (voice) (uncredited) |
 James MacDonaldAjax the Gorilla (voice) (uncredited) | Ajax the Gorilla (voice) (uncredited) |