Michael Mason is an American pickpocket living in Paris. He is a petty thief, of those he steals not to starve.
In the tape we see him stealing one more day, in which he manages to take a woman’s purse. In the bag there is more than a wallet, but he is only interested in this wallet, which is where the money is. He is happy with his last blow, but he does not know that this robbery will complicate life much.
The robbery puts him on the radar of Sean Briar, a CIA agent investigating a criminal group, which owns the wallet Michael has stolen.
That means that his theft makes him a CIA pawn, a sort of mole that Sean will use to investigate the criminal organization he has been tracking for some time in France.