Count Miles, who developed a new energy source, convened the World Cup Grand Prix, and all kinds of players gathered, but the Piston Cup overlord Lightning McQueen (voiced by Huang Lei) was missing. It turned out that he just returned to the hot spring town and enjoyed a happy vacation with his good buddy Ban Ya (voiced by Fan Wei) and his girlfriend Sally. Due to the provocation of Italian Formula One racing driver Faras Gao, and of course jealousy, McQueen finally agreed to participate in the World Cup and travel around the world with Ban Ya and other friends. The day before the Japanese race, Ban Ya accidentally met British agents Mike Feidan and Holly (voiced by Yao Chen), who were tracking the new movements of a criminal gang. Ban Ya was mistakenly regarded as a joint agent from the United States by Holly, and thus got involved in trouble. In the next day's competition, McQueen and Faras Gao competed fiercely. At the same time, there were constant accidents of players bursting the cylinder, and Ban Ya ran into the scene of Mike and the mysterious organization fighting. Because of this series of accidents, the friendship between McQueen and Ban Ya was shaken, and the boss behind all this gradually revealed his true face...