Heartland Thunder

Four Dirt Modified racers battle it out at 120 miles per hour.

Tim and Dan race to repair badly damaged cars; Tim is offered a trial run at a sponsorship.

Four racers cross paths many times in a small town.

The racers take on their cross-state rivals at the Central Missouri Speedway.

Tim reunites with his friend, NASCAR driver Clint Bowyer; Dan mentors 16-year-old race prodigy AJ Tice.

The racers prepare for the most lucrative race of the year.