1920. Georges Clémenceau just lost the french presidential elections to the unknown Paul Deschanel, an idealistic who wants to change the country. But, one day, Deschanel falls from a train and disappear. At daybreak, France is looking for its president, a great chance for the « Tiger » Georges Clémenceau.

Vincent, a civil servant, has always enjoyed the benefits of his family's status. When the government votes on a massive savings plan, Vincent is pushed out. When he is transferred to the North Pole, he meets Eva and finds love. It's time for him to choose.

Thomas, a blasé young man, spends his nights in clubs and his days in bed. Until his father, Dr. Reinhard, fed up with his son’s escapades, cuts him off completely and forces him to take care of one of his young patients. Mar- cus, 12, was born with a serious congenital disorder. He lives with his mother in the poor suburbs of Paris and spends his days either at the hospital or in a center for sick children. This encounter will disrupt their lives and change them both, profoundly and forever.

Newly promoted Lieutenant Valentine Ventura finds herself working with famous Captain Antoine Thomas who just came back from his medical leave after the tragedy he lived a few months ago : victim of a car crash that killed both his wife and the child she was bearing, Antoine Thomas spent several months in the hospital, and is now back in a wheelchair after losing function of his legs. Working on the case of a murdered young journalist, the two detectives succeed in arresting her colleague, whose guilt is undeniable. Multiple elements even indicate that they just caught a serial killer; although he admits he killed the young journalist, their suspect didn't commit these other murders, and seems to be the victim of a manipulation.

An Algerian man's life-long dream finally comes true when he receives an invitation to take his cow Jacqueline to the Paris International Agriculture Fair.