Summer 1998. Palavas-les-Flots. While the World Cup is in full swing, Sandrine Laplace, a bumbling contract worker who thinks she's a CIA agent, decides to investigate a mysterious accident that happened on the ghost train at the local fair. Incompetent but reckless, Sandrine infiltrates a brutal world - made up of clan wars, cotton candy and bumper cars - and will have to form an alliance with Carmen and Yvane, two showmen who are completely opposite. What if there was a murderer in the carnival?

Chateauneuf-sur-Valone, Mayor Félix de Ponte is preparing for his re-election, hoping to beat the far-right candidate Jean-Luc Molment Martinez. But when a video revealing his extra-marital affair is broadcast on the networks, Félix's life will be turned upside down. Devastated, betrayed and humiliated, his wife, Rose, decides to react and runs against him in the elections.

35-year-old Audrey, the only survivor of a mysterious serial killer who raged in the Biarritz region 16 years earlier, is brutally taken back to her past by a new crime: a 17-year-old girl is found murdered on the Basque coast. Nothing links this murder to the series of crimes committed in the early 2000s by the "Itsas Killer," but Audrey is certain that Itsas is back.

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.

Astrid Nielsen works in the library of the judicial police. She has Asperger's syndrome. With an incredible memory, she excels at analyzing files of ongoing investigations. The district commander decides to use it to the fullest, entrusting her with very complex investigations which have remained unsolved to date.

Pierre is at a high school party with his best friend and secret crush Nikki Marianne, but she is more interested in an older man.

Jean-Étienne Fougerole is an intellectual bohemian who released his new novel "In Open Arms" and calling the wealthiest people to welcome home the families in need. While he promotes his book during a televised debate, his opponent criticized him for not applying what he himself advocates. While stuck, Jean-Étienne Fougerole accepts the challenge, for fear of being discredited. The same evening, a family of Roma rings the door of his Marnes-la-Coquette villa and the writer feels obliged to house them.

Max Salinger, writer divorced, flamboyant and self-absorbed, refuses to welcome her daughter for 15 years under its roof. In revenge, she steals his last manuscript and file class of snow. To retrieve his property, Max has then no choice but to land in the ski resort to improvising "accompanying parent. Only problem: the famous writer, who is not already an exemplary parent, is not really a qualified nor attendant! EPIC descents in infernal hiking, the life of Max in the mid-teens was not all rest Announces...

Brothers Yvan and Max are total opposites. One is a hypochondriac; the other, a carefree optimist. Their little sister Hélène suffers from kidney problems and urgently needs a transplant. Both are called upon but only one will be chosen.

A French police inspector solves crimes and mysteries while also raising two teenage daughters.