A rich Yank docks his yacht in Mexico and steps ashore for adventure. Meanwhile, Conchita, the local beauty, accepts an engagement ring from the hot-headed Martino, who promises to kill any man who gains her favors. Conchita already has another boyfriend, Ferdinand the bull fighter. They conspire to find a gull, she'll pretend he is her new boyfriend, Martino will kill him and be arrested, and she'll be free to be with Ferdinand. Their mark is none other than our rich gringo who's already fallen for Conchita. He's an innocent abroad; what chance does he have?