Francois, a sympathetic factory worker, kills Valentin with a gun. He locked himself in his furnished room and starts remembering how he was led to murder. He met once Francoise, a young fleurist, and they fell in love. But Francoise was gotten round by Valentin, a dog trainer, a machiavellian guy...

Down a foggy, desolate road to the port city of Le Havre travels Jean, an army deserter looking for another chance to make good on life. Fate, however, has a different plan for him, as acts of both revenge and kindness render him front-page news.