Jericho Buck is young, tough, and fearless, and has been burning across the western frontier like a prairie fire since he left home at 14. Now 21, Jericho finds his biggest adventures yet riding 100 miles a day through a desolate, hostile landscape for the famed Pony Express.

In 1860, beautiful Estella Colombo flees arrest in her homeland Mexico and finds refuge at a small village in New Mexico Territory. But, when agents of Mexico seek her employer over a decades-old heist of church treasures she soon becomes embroiled in a life and death struggle. Estella runs farther north to the village of Arroyo Seco, where a Priest, a blacksmith, a Texas Ranger and a boy join forces to help her evade the deadly pursuit. Yet, in the...