Musical performances set in a rooftop nightclub in Manhattan.

Heavyweight champion Joe Palooka (Robert Norton) and his manager/trainer Knobby Walsh (Shemp Howard), are eating a poor farmer out of house and holdings while Joe prepares for a championship bout at Madison Square Garden. The farmer sends the local sheriff to collect from Knobby.

Joe Palooka and the gang travel to Paris for a boxing match against the French champion. When Anne is assaulted by a masher, Joe searches the streets for the hooligan, distracting him from his preparation for his powerful opponent.

Before the big fight, Joe and his opponent come to blows at their hotel. Palooka knocks him out and the fight has to be postponed.

Now that they're engaged, Ann wants Joe to retire from the ring, seeing as how he's the heavyweight champ. Ann's mother, who doesn't want her daughter marrying "beneath" the wealthy family's standing, to set Ann up with a European count. What the mother doesn't know is that the "count" is after the family's money more than he is Ann.

Joe Palooka and Strangler Chokeovitch have set up training camps on adjacent beachfront sites. When Joe knocks out the Strangler after a misunderstanding, Chokeovitch's manager challenges the champ to a professional wrestling bout, with the winner taking all the gate receipts.