Cheerful, honest and loyal to a fault, Mater rushes to his best friendís defense, which ultimately lands the off-duty Lightning in an international racing exhibition: the World Grand Prix. When Lightning invites Mater to come along as a member of his pit crew, Mater leaves Carburetor County for the first time ever. Not long after their arrival in Tokyo, Mater learns that the world outside of Radiator Springs is decidedly different and its newfangled ways may take some getting used to. But when heís mistaken for an American secret agent, he falls into an intriguing adventure of his own. Caught between supporting his best friend on a globe-trotting racing competition and his new role in international espionage, Mater ends up in an explosive chase through the streets of Tokyo and Europe alongside a team of British spies and international bad guys.