TZ Blake inherits All Tune and Lube from her Aunt Elise. Unfortunately, it comes with numerous debts. TZ must raise the money, and quickly, before she loses the shop to her creditors. The tight butt contest at Chugger Charlie's is the perfect solution. But when she ties for first place, she's still in need of cash. Rally driver Cade Nyland is a judge at the tight butt competition. Being notified that his original mechanic broke his leg in a skiing accident places Cade in desperate need of hiring someone new. When TZ hires herself out as his mechanic, he believes the race to be won. While TZ cannot read a road map, she is good at solving the riddles that get them from checkpoint to checkpoint. It’s the SunCoast Run, a four-day race across balmy Florida, and Cade and TZ are stuck with each other in the close quarters of a vibrating '67 Mustang with a mind of its own. All factors indicate that the unlikely duo are in for a bumpy ride. Warmed by the Florida sun, Cade and TZ fall a little off course and a lot in love.