When Clyde Manson, Hoss Kemp and the Mexican, Guerrero, ride from the Mexican border to Sasabe, Arizona, there is much more on Manson's mind than a straightforward bank robbery. Manson is a high-flyer from New York. Why is he involved with outlaws? Why does such a man so desperately need money? Why is he determined to reach Yuma? The bank robbery is successful, but Deputy Marshal Will Hawker is shot dead. Suddenly the outlaws have a posse led by Marshal Slade Hawker hot on their heels as they take flight across the arid Arizona deserts. With the figure of Deputy US Marshal Wyatt Earp proving a sinister presence there is a final, bloody showdown.