The top trainers in the sport of horse reining dial up the heat in Arizona as they try to qualify for this year's Run For A Million, giving them a shot at the largest purse in the history of the sport.

With the final qualifiers selected for this year's Run For A Million, it's back to the ranches as the McCutcheon dynasty gets back to business; after missing the qualifier, Abby Lengel must begin the process of trying to get back into the competition.

Andrea, Matt, and Craig share the struggles and joys of the sport they love while training some of the next generation's brightest reining stars -- their children.

The competitors test their best Run For A Million prospects at the NRBC in Katy, TX. Some riders are sliding away with big checks while others are realizing they might not have the caliber of horse they will need to take the top prize in Vegas.

With the Run for a Million just around the corner, the top riders meet at the NHRA Derby for one final test before Vegas. The underdogs are out to prove they are a force to be reckoned with against the top contenders.

The moment has finally arrived as the sport’s best riders gather in Vegas with their eyes on the top prize. The excitement and tension are high as these riders know that one perfect ride could change their lives forever.