An eighteen-year-old student is infatuated with an older woman, the mistress of a famous racing driver. Taking advantage of a misunderstanding between the two lovers, he manages to seduce her and falls in love.

Claire's handbag is stolen. It contained a letter written ten years previously by the man who is now the French President. In the letter, he urges his pregnant mistress to have an abortion. Claire immediately alerts the President's men. From that moment, the machinery of state swings into action.

After carrying out a flawlessly planned hit, Jef Costello, a contract killer with samurai instincts, finds himself caught between a persistent police investigator and a ruthless employer, and not even his armor of fedora and trench coat can protect him.