The Tootings are struggling to find and collaborate with Chitty's builders, the Potts family, when a fiendish criminal kidnaps Little Harry and steals the magical car.
The Tootings plan to go home, but they accidentally send themselves back to the Jurassic Age, and after being chased by a T-rex they head to Prohibition-era New York where Chitty enters a race to the lost city of El Dorado and back again.