Neyla Mafany (Dayan Kodua) from Cameroon dies in an arson attack on a communal shelter for refugees in Bamberg. She was in the pantry when the incendiary device flew into the communal kitchen from the street. The escape route was blocked by a door that could only be locked from the kitchen. For the investigators of the Franken murder commission, the question arises as to whether someone in the kitchen took advantage of the situation and locked the door. Is there a perpetrator inside and one outside? None of the local residents saw anything. None of the refugees make a statement. Nobody wants to get in trouble. When Paula Ringelhahn (Dagmar Manzel), Wanda Goldwasser (Eli Wasserscheid) and Sebastian Fleischer (Andreas Leopold Schadt) take the case to the police, Felix Voss (FabianHinrichs) still on the return flight from the Caucasus.
He visited his grandmother there. The fact that nobody in the refugee accommodation knows him yet gives Voss the idea of investigating undercover as an alleged Chechen refugee. None of the residents are from Chechnya. And Felix, with his knowledge of the country and language, brings along a little legend for an undercover investigation. While Paula, Wanda and Fleischer carry out official interrogations, Voss as Erso Maskhadow tries to build trust in the shelter and thus get information from inside. He carefully approaches Said Gashi (Yasin El Harrouk), who is in charge among the refugees. He soon has more in common with the traumatized young Syrian Basem (Mohammed Issa).