Fifteen-year-old Mackenzie returns to Paris to attend the Christmas Eve wedding of her Dad's old friend, Rudee Daroo, and the love of his life, dancer Sashay D'or. Mac is told about the annual New Year's taxi road rally, this year hosted by the Marseille Marauders, the nastiest lot of drivers you've ever seen. Partnered with hulking cabbie Blag Lebouef, Mac manages to convince her parents that the road rally is more like a carefree drive in the French countryside than the death-defying cutthroat rivalry it's always been. Negotiating brutal weather, cryptic signage, outright sabotage, random flocks of sheep, and zigzagging back roads, Mac and Blag might be the perfect combination of cunning and brute strength. On the road, she makes the startling discovery that the clues the drivers have been given during the rally could lead to the discovery of some valuable missing artwork. Is that worth losing the rally over?