Trivial

Lt. Jacques Renard, a Le Havre police lieutenant, is still haunted by the death of his wife, Chloé. He has spent six months in a mental hospital after a suicide attempt, and the memories of his loss shadow his every move. The weight of grief leaves him withdrawn and emotionally exhausted as he drags himself through each day.

A mysterious woman waits for Renard in his car and pleads with him to help. She insists that he visit the Hotel Normandy's manager in Deauville, mentioning Room 401 by name. Before he can react, she vanishes, leaving him unsettled and curious about a case he has yet to begin.

Renard travels to Deauville to search for answers. There he meets Camille, the manager Antoine Bérangère's son, who informs him that Bérangère disappeared about 48 hours earlier under suspicious circumstances. With no identification and no clue, Renard learns there is no Room 401 at the Hotel Normandy.

Renard searches Bérangère's room and finds a key to Room 401. Inside, the room is decorated with old photographs and mementos of Bérangère's deceased first wife, Victoria Benutti, a film actress who died in 1970. The eerie display hints at a long, hidden connection between past infidelity, fame, and present disappearances.

Camille resents Renard's intrusion, while Pierre remains pragmatic and leans toward suicide as a simple explanation. Renard, however, senses something far darker at work and grows suspicious of Mélanie, Bérangère's second wife, whose evasive behavior fuels his concerns.

A Duchess guest at the hotel tells Renard that Victoria's ghost still haunts the premises. The tale injects a supernatural tint into the investigation and deepens the sense that the hotel holds long-buried secrets. Renard hesitates but proceeds, compelled by the clues piling up around him.

Renard spots the mysterious woman again and pursues her through the hotel until they reach the roof. She eludes him once more, leaving him with an even more puzzling tie between the woman and the hotel’s hidden past. The chase heightens the tension and pushes him deeper into the mystery.

Police discover Berangère's car abandoned on the Deauville cliffs. A body turns up in the morgue, the skull and face obliterated by a gunshot from Berangère's own rifle, suggesting a staged death. Renard suspects foul play rather than a simple suicide and starts chasing the true culprits.

During the investigation, Renard learns at a gas station that, after Victoria's car crash in 1970, a man in a Mercedes stopped to call for an ambulance. This clue points to a deliberate cover-up tied to Berangère and Victoria's past, complicating the case further.

Renard visits the cemetery where Victoria and Chloé are buried and discovers the mysterious woman's Volvo with a DVD labeled 'Lucie 1982' inside. The find hints at a link between Lucie, Victoria, and the hotel’s dark history, pushing Renard to connect the dots.

Renard watches the DVD and confronts home movies of a teenager—Lucie—being molested by Berangère. The footage makes it clear that the mysterious woman is Lucie, Victoria's daughter, and begins to unlock Renard's suppressed memories about Lucie.

Back at the mental hospital, the head nurse confirms that Lucie was treated there, and Renard finally remembers her. He steals the hospital computer to search for Lucie's address, with Pierre hot on his heels as the pursuit escalates.

Camille visits Renard in jail and explains the 1970 crash: Victoria, her lover, and Camille were in the car when Berangère forced them off the road. He also reveals Evelyne, the nanny, disappeared after the crash, implying a deeper conspiracy surrounding the family’s past.

Camille locates Evelyne's apartment and uncovers a DVD showing Berangère molesting Evelyne. The discovery corroborates years of abuse and the lengths to which Berangère went to maintain control, adding motive to the crimes tied to Lucie and Victoria.

Renard tracks Berangère to the family yacht, where Lucie steps forward with a gun and ties up the startled lieutenant as Berangère plans to flee with money. In the ensuing struggle, Lucie lets go of the mast, knocking Berangère into the sea where he drowns. They return to Deauville, and sometime later Lucie meets Renard on the cliffs to share a kiss, signaling a fragile new start.