Dealer follows 24 hours in the increasingly hellish life of a 30-something Parisian small time drug dealer. Dan is itching to get out of the drug trade and he thinks hes found his out and the chance to take his daughter to Australia to emigrate when a one-time only, big cocaine proposition falls on his lap during Fashion Week. He reluctantly agrees to it, a decision that propels him into the violent local underworld of amoral criminals, prostitutes, backstabbing allies and where no one can be trusted and violence is seemingly the only path to take.