Undercover investigator Cuma Ozan is under double pressure: while the Frankfurt police are investigating him in a sensitive murder case in the clan milieu, he is still suspected of killing Laura Brunner in Mordach. The noose around Ozan tightens after the victim's half-brother Martin, who is also a suspect, dies under unclear circumstances. To exonerate himself, he reveals the whole truth about his relationship with Laura and how his service weapon went missing to his partner Toni. A new lead leads the unlikely detective duo to the shrewd politician Ronfeldt, who seems to be hiding something. To uncover his secret, Toni sets a trap for the suspect. Meanwhile, the victim's father, the influential businessman Jakob Brunner, is still out for revenge. As with all matters in Mordach, he wants to solve and punish the murder of his daughter in his own way. When Ozan and Toni realize what Brunner is planning, there is little time left.