Will Mahoney needs a break, so he goes on a weekend cruise under the name of a wanted fugitive. Apprehended, he has to prove who he is by being the master of ceremonies of a show, singing one of his old songs, and doing one of his eccentric tap dances.
Mahoney was a man who could tap up a storm, including some eccentric specialties. When vaudeville died in the US, he wound up in Australia, where he was popular for decades.
Besides Mahoney, there's a band that switches facilely between hillbilly music and Hawaiian, a pair of tap-dancing roller skaters, and an a capella children's chorus. Mahoney's big tap routine is still pleasing.