Lieutenant Niki of the Austrian royal guard has a new girlfriend, Franzi. He's crazy about her and is smiling at her while on duty in the street. King Adolf and his daughter Princess Anna from the neighboring kingdom of Flausenthurm drive by, and Anna intercepts a wink meant for Franzi. She falls for Niki, marries him (he has no choice in the matter), and whisks him off to Flausenthurm. Franzi follows and enjoys a brief affair with Niki before Anna finds out. Franzi, much more experienced in the ways of the world, gives Anna lessons on how to win the affections of her husband.
Set against the sexy, glamorous golden age of Formula 1 racing in the 1970s, the film is based on the true story of a great sporting rivalry between handsome English playboy James Hunt (Hemsworth), and his methodical, brilliant opponent, Austrian driver Niki Lauda (Bruhl). The story follows their distinctly different personal styles on and off the track, their loves and the astonishing 1976 season in which both drivers were willing to risk everything to become world champion in a sport with no margin for error: if you make a mistake, you die.