Dangerous missions are the bread and butter of the Thunderbirds, a high-tech secret force employed by the government. Led by Jeff Tracy (Bill Paxton), the Thunderbirds are at the top of their game, but their nemesis, The Hood (Ben Kingsley), has landed on their island and is attempting a coup by using the team's rescue vehicles. He'll soon discover that the Thunderbirds won't go down.

Alain Lefevre is a boxer paid by a Marseille mobster to take a dive. When he wins the fight he attempts to flee to America with the mobster's girlfriend Katrina. This plan fails and he seeks escape by joining the foreign legion. As part of the legion he tangles with abusive lieutenant Steinkampf and bonds with legionnaires Luther, Mackintosh and Rosetti.