The aloof, Parisian detective Max is frustrated by a gang of robbers he has failed to catch, time and time again. To save face, he decides to entice the petty thieves (led by an old acquaintance) to rob a bank. He poses as a rich banker and lures the lead criminal's girlfriend, Lilly, with a hefty payroll that comes through his bank. The gang of thieves take the bait and start putting together a job, the cops lying in wait for them. Max's plan is coming to fruition – but will it pay off, or will the theives escape with the dough?