Stan and Ollie are mousetrap salesmen hoping for better business in Switzerland, with Stan's theory that because there is more cheese in Switzerland, there should be more mice.
Some really fine comedic set-pieces to see here, though studio ideas to both pad the length with silly musical numbers and broaden their prospective audience (and thus coffers) with romance and the aforementioned songs weren't the brightest in the world. Still a good comedy that's essential watching for fans of both the duo and of that era of comedy in general.