Donna Müller (Elena Bernasconi) is pushed off a bridge and dies instantly. The case leads the Lucerne crime scene investigators around Reto Flückiger (Stefan Gubser) and Liz Ritschard (Delia Mayer) to three children who come from three different fathers. The municipal "care team" is called and the children of the deceased are taken to the children's hospital for observation. Neither the children nor Donna's closest friend Biljana Lukovic (Danijela Milijic Stojcetovic) know what Donna was up to on the night of her death and who might have an interest in her death. Only Daniele Rossi (Hans-Caspar Gattiker), the father of the eldest, Emma (Annina Walt), makes himself suspicious with his hateful statements about Donna and his membership in a radical fathers' group.
André Barmettler (Benjamin Grüter), the father of the youngest, Alisha (Anna Fritz), lives in Lucerne but has no contact with either his daughter or Donna. He is married, and the girl was the result of an infidelity. Ravi (Pablo Caprez) also hardly sees his father Alain Schaller (Juan Bilbeny), who is staying in an ashram in India. Donna has been trained as a "spiritual healer" and her teacher Pablo Guggisberg (Grégoire Gros), who is said to have the psychic ability to communicate with the dead, offers to help the police. Liz Ritschard can only laugh at such nonsense, because it is clear to her that Daniele Rossi, who was in a constant dispute with his ex-wife, is responsible for her death. Flückiger, on the other hand, does not believe in Rossi's guilt.
With the case stagnating, he accepts the spiritual healer's offer. But the meeting leads to nothing. The medium explains that contact with the dead Donna suddenly broke off. Can Pablo Guggisberg actually talk to the dead and Donna doesn't want to reveal her killer? Or does Pablo Guggisberg know more than he admits? This "crime scene".