It is 1967, and Larry Gopnik, a physics professor at a quiet Midwestern university, has just been informed by his wife Judith that she is leaving him. She has fallen in love with one of his more pompous acquaintances Sy Ableman.

When a psychotic Santa tries to destroy Chanukah by hypnotizing Jewish children with bootlegged copies of the Christmas classic "It's a Wonderful Life," it's up to the Hebrew Hammer to save the day. Together with Mohammed, head of the Kwanzaa Liberation Front, the Hammer takes no prisoners in his quest to hunt down the renegade Santa and make the holiday season safe for all.

Thirty-somethings Michaël, Nabil and Sylvain head to New York to surprise their friend Samia on her birthday, secretly arranged with the help of another friend, Gabrielle. The two women had moved to NYC two years previously to try their luck. Samia shares a fabulous loft with a renowned American actress and works as her assistant. Gabrielle has a more mundane job in a small retirement home. Transposed to New York, the close bonds formed over the years between the five friends from a housing project on the outskirts of Paris take on a different aspect. The laughter and emotion is dictated by the adventures they share during their stay, from the daily lives of the women to the discovery of this cult city.