When Sara is served divorce papers while she is in New York, she is stunned. Not about to lose the fortune she amassed with her self-serving Texas husband, she makes an offer to her process server, Joe that sets them off on a wild trip across the country.

Set in Mexico, a nun called Sara is rescued from three cowboys by Hogan, who is on his way to do some reconnaissance, for a future mission to capture a French fort. The French are chasing Sara, but not for the reasons she tells Hogan, so he decides to help her in return for information about the fort defences. Inevitably the two become good friends but Sara has a secret..