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...
Margaret Hill-Talbot
as Mouse
Mel Blanc
as Cat (voice) (uncredited)
Bernice Hansen
as Johnny Mouse / Susie Mouse / Various Mice (voice) (uncredited)
