Cortland Enders is about to go to prison when the woman he works for invents a scheme to save him. Cort will serve his three-year sentence running the ranch, bound to it as Sienna Harris' new husband. The marriage is in name only, enabling Sienna to leave the ranch to Cort after she dies of the cancer that's consuming her. Lark Garrin is on the run from outlaw Will Cardin. Overcoming impossible odds, Cort uses his skills as a tracker and gunfighter to find her and set her free. Set on the frontier during turbulent times, this story carries its gritty and prideful characters through tragedy and mistakes, as they fulfill an imperfect promise.