A police brigade working in the dangerous northern neighborhoods of Marseille, where the level of crime is higher than anywhere else in France.

A single devastating event intertwines inextricably the lives of an unfortunate teenager, a weary woman with a critical degenerative heart condition and a team of compassionate doctors; all perfect strangers, perfectly interconnected

In November 2009, French security van driver Toni Musulin makes off with nearly 12 million euros, then turns himself over to the authorities a week later.

In the streets of Paris, three soldiers from Operation Sentinel are on patrol. On the lookout, they await imminent but invisible danger.