Nice, August 1936: the first paid vacations and four women whose destinies intertwine in a city where jubilant workers and disdainful bourgeois clash. Eugénie, a unionized factory worker with a troubled past, tries to protect her son Louis from the shadows of his history, while Léonie, a young police auxiliary newly arrived at Commissioner Raven's side, is actually fighting to save her father, who has been sentenced to death. Blanche, a socialite wife, hides a forbidden affair with the formidable prosecutor Adrien Jacquart, and Giulia, the discreet housekeeper at the Riviera Palace Hotel, struggles to protect her daughter from a dark secret. A bloody murder in the luxury hotel, family lies, and an explosive passion: who killed? Who is lying? And how far will they go to protect their loved ones?

Édouard Ackerman turns himself in to the police for the murder of Prosecutor Jacquart, but everyone doubts his guilt, especially his daughter Angèle. At the Riviera, tensions rise: Giulia lies under Delaunay's threat, and Léonie discovers that Édouard has a solid alibi because he was helping Jews flee Europe, threatened by the rise of Nazism. It is in this context that the Riviera's gala evening turns into a nightmare: Jean lashes out at Delaunay in front of everyone, Blanche stumbles upon documents proving that her great love, Adrien, was a notorious anti-Semite… And Edgar, the hotel manager, is found dead in his office…