Rebecca Jauer is discovered poisoned in front of the regionally famous "wishing tree". But why did the perpetrator display the body so demonstratively in this well-known place of all places? The clues lead to the tree nursery of Saskia Prixner (Miriam Stein), who had actually granted the dead Rebecca a wish: she had gotten her a job in the company of her brother Stefan Prixner (Julian Looman). That same evening, Saskia is found dead - murdered with the same poison as Rebecca. The detectives have to face a series of murders in the course of which Rebecca's ex-boyfriend Oliver Lorenz (Emanuel Fellmer) also becomes a victim. But where is the connection that leads to the perpetrator?