An idyllic North Sea island, with fresh sea air, the calls of seagulls, and seals singing in a quaint seaside town, appears perfect. However, its serene facade begins to crack, revealing hidden tensions, unexpected challenges, and unexpected secrets lurking beneath the tranquil surface.

The lifeless body of a woman is discovered washed up from the sea, her name and origin a mystery. Bound and cast into the ocean alive, her body bears bruises, suggesting she suffered abuse before her death. Detectives Clüver, Feldmann, and Ina embark on a gripping investigation to learn the identity of the enigmatic victim, piecing together clues that delve deeper into a dark and disturbing past. As they navigate a web of secrets and deceit, the race is on to reveal who she was and why she met such a tragic fate.

A severed arm found on the beach at Rantum creates a stir for the Sylt police. While the coast guard searches the North Sea for a body, suspecting the arm was severed by a ship's propeller, Chief Inspector Theo Clüver and his colleague, Hinnerk Feldmann, investigate a strange incident reported by a uniformed officer.

Detective Sven Lund stumbles upon a grim discovery. The body of Nobu, head chef at the upscale restaurant Josef's, is found in a fishing trap on the beach. Detectives Clüver, Hinnerk, and Ina launch a murder investigation, uncovering signs that this was no accident. However, the intrigue deepens as the next day brings yet another significant blow to Josef's. With tensions rising and secrets lurking beneath the surface, the detectives must solve the mysteries surrounding the deaths to reveal the truth.

Club owner Ronny Klöcker is found dead at home by his cleaning lady, Jamila. His body lies unclothed amid scattered sex toys, but it's unclear if it was a crime or a tragic accident. The night before, Ronny partied with four young women who now cannot recall the wild night. Detectives Clüver and Ina uncover a surprising twist when they find a man known to them in the women's bed. As the investigation progresses, secrets surface, and the line between revelry and ruin blurs, leading to an unpredictable conclusion in this gripping, suspenseful tale.

A mysterious murder without a body challenges Chief Inspector Clüver and his team. Clüver's investigative instincts begin to falter when he falls for the main suspect. Cleaning lady Alida Olariu reports to the Sylt police that she has discovered the body of missing sculptor Kipling in a pond.