Paris, France, early 19th century. The legendary convict François Vidocq lives in disguise trying to escape from a tragic past that torments him. When, after an unfortunate event, he crosses paths with the police chief, he makes a bold decision that will turn the ruthless mastermind of the Parisian underworld against him. Vidocq escapes captivity in 1805; years later he's a fabric merchant in Paris under an alias. He makes a deal of amnesty for catching criminals. He builds an efficient team of ex-cons to catch or kill them.