In the bordertown of San Pablo, preparing for an annual "Mexican Fiesta," arrives Gagin: tough, mysterious and laconic. His mission: to find the equally mysterious Frank Hugo, evidently for revenge; or is it blackmail? FBI agent Retz is also after the elusive Hugo. Everyone in town is enigmatic, especially Pila, a mystical teenager who follows Gagin around and has premonitions of his death. Also involved are a classic femme fatale and an antique carousel with a pink horse...