Wanted: Young skinny, wiry fellows not over eighteen. Must be expert riders. Willing to risk death daily. Orphans preferred. When Colton Westcott sees this sign for the Pony Express, he thinks he has the solution to his problems. He's stuck with his ma and two younger sisters on the wrong side of the Sierra Nevada Mountains, with no way to get across. They were on the wagon train heading to California when Pa accidentally shot Colton and then galloped away. Ma is sick, and Colton needs money to pay the doctor. He'd make good money as a Pony rider. He also needs to get to California to deliver freedom papers to Ma's sister, a runaway slave. The Pony Express could get him there too...