Vincent finds himself under attack for no apparent reason overnight. When the phenomenon intensifies, he must run and change his way of life completely.

A banker has died. He trafficked in nuclear material, so French intelligence assign two agents to find his list of contacts, which are on a flash drive: Muriel - the boss, acerbic, willing to sleep with any man, wondering if she should have a child - and Philippe, younger, boyish, meticulous, bothered by Muriel's frank sexual interest. They watch Constance, the banker's widow: a naïve, friendly, open, trusting. She's taking opera lessons, so the French spies join the class, which Muriel enjoys. It seems that other spies are after the same USB, and some of them sing as well. Singing, spying, and sex lead to duets of all kinds as well as to an eventual showdown.

Mona, a prisoner on work release, meets Clément, a shy actor. Desperate to impress Mona, Clément recruits his extroverted friend, Abel, to help. When Mona becomes more interested in Abel, it sets off a conflict between the two friends. Meanwhile, Mona attempts to keep her past hidden.

Victoria is a thirty-something divorced lawyer who's struggling to raise her two daughters. She is canny and cynical but on the verge of an emotional breakdown. At a friend's wedding she reconnects with Vincent, an old friend, and Sam, an old client. Her life is about to take a new turn.