In Gothenburg. Louise is out walking at night - and witness an assault. She knows the attackers well. It is her sister Berit with boyfriend Ernie. Louise is told to be quiet of what she has seen. She moves to Stockholm.
The most daring drivers in the world have gathered to compete for the 1966 Formula One championship. After a spectacular wreck in the first of a series of races, American wheelman Pete Aron is dropped by his sponsor. Refusing to quit, he joins a Japanese racing team. While juggling his career with a torrid love affair involving an ex-teammate's wife, Pete must also contend with Jean-Pierre Sarti, a French contestant who has previously won two world titles.
Michelle Moreau notice a man replacing a battery in a race car. She is chased by the man but escapes. The race car belongs to Bobby Flyckt and Michelle gets a lift with him through Europe.
