Im Tunnel.

After Maren's brother is murdered, the young woman is completely shaken. Because the police only deal with the case in a routine manner and have no results to show for it, she sets about investigating the case herself. But in doing so, she realizes that she may be tangling with powerful people whose influence extends into her immediate surroundings. She believes that the nuclear waste mafia is behind her brother's death and that her own husband Mehdi is one of the criminals. Maren no longer knows who to trust. She feels like she is being watched every step of the way and even her best friend Iris doesn't believe a word she says. Little by little, Maren has to ask herself whether her family is in grave danger or whether she herself is the one in danger...