The fact that Feli Lorentzen has left Berlin and is now supporting the Kripo Flensburg under the direction of her sister, chief inspector Viktoria Lorentzen, as a forensic scientist in Flensburg, only finds out when the two are already on their way to their first case together. Victoria is outraged. With the best will in the world, she cannot imagine working with her sister. But: individually the sisters are good, together they are brilliant.