Tom has amnesia and believes he's a mouse. Jerry, finding him more obnoxious as a fellow rodent than as a cat, seeks to cure him with a blow to the head.
| Actor | Role |
|---|---|
 June ForayTom's Squeaks (voice) (uncredited) | Tom's Squeaks (voice) (uncredited) |
 William HannaTom / Jerry (voice) (uncredited) | Tom / Jerry (voice) (uncredited) |
 Lillian RandolphMammy Two-Shoes (voice) (uncredited) | Mammy Two-Shoes (voice) (uncredited) |