In the ghettos of Paris in 2010, an undercover cop and an ex-thug try to infiltrate a gang in order to defuse a neutron bomb.

A struggling writer finds a shortcut to fame, but a blackmailer threatens to ruin his perfect life.

In Japan for the funeral of his long-lost love, a tough French detective learns that he also has a teenage daughter and that her life is in danger from the Yakuza.

Marion and Jack try to rekindle their relationship with a visit to Paris, home of Marion's parents -- and several of her ex-boyfriends.