Working a ranch is all very well, but there are faster ways to earn a buck when the gold rush is on. Silas Plummer has been choosing his marks and making a profit with his partner, Dr. Aaron "Arid" Gifford, for the past ten years, and they agree it's time to call it quits -- after they unload one last haul of mining shares. But the shares are a hot commodity in more ways than one, and speed is of the essence if the boys are going to realize the cash. Skedaddling from Cripple Creek to Chicago, Silas and Arid have to honor a scoundrel's agreement with a shady character from their past before they can conclude their business and enjoy retirement. From the wonders of the World's Fair to the seedier delights of Little Cheyenne, there's no end of challenges to keep their wits sharp. And all the while, Silas is wondering: does he really want this partnership to end?