Joe Palooka, a boxing champion, agrees to a rematch with Cardona in South America, but his manager is unaware that the South American summer is just four weeks away. Meanwhile, a reporter, Anne Howe, goes undercover to report on Palooka's training, while a group of counterfeiters attempt to smuggle fake currency plates onto the ship. When an investigator posing as a writer is "killed" on board, Palooka and his manager team up to help him catch the counterfeiters, who have switched an ancient Inca statue with one containing the plates.
Joe Palooka in the Counterpunch
Joe embarks on a perilous quest to South America to confront the Latin champion, but initially, he joins forces with federal agents to dismantle a counterfeit operation on a high-risk vessel.