The Man̳ana Kid, a mysterious border vaquero, arrived in Guadalupe in the midst of a killing at the Cantina El Paseo. Accused of the crime, he escaped from the pursuing posse and disappeared into the sparsely settled Santa Ynez Valley, mounted on his swift Palomino stallion. His determination to locate the real murderer led him into a series of exciting adventures. He had only one clue to work on, and a warning concerning the Rancho Diablo, but the Man̳ana Kid, in spite of his nickname, was not the type to be easily discouraged.