The mice are on the loose after hours in a doctor's office, playing with the various pieces of medical apparatus. Susie Mouse is caged for research until her lover Johnnie frees her. A mouse orchestra plays a swinging wedding song. But throughout, a cat is stalking...
| Directing | Tex Avery | Director |
| Writing | Jack Miller | Story |
| Visual Effects | Irven Spence | Animation |
| Visual Effects | Virgil Ross | Animation |
| Editing | Treg Brown | Editor |
| Visual Effects | Sidney Sutherland | Animation |
| Production | Leon Schlesinger | Producer |
