In Wesel, Commissioners Gero von Aha and Nikolas Burmeester face a shocking mystery. Their boss, Karin Krafft, has disappeared, and a headless corpse appears on the banks of the Rhine. Is the demonstration of outraged citizens against the expansion of the Betuwe line related to this? Radical forces even want to bomb the railway line. But the entire Lower Rhine region is affected, as the dangerous group has its headquarters on the left bank of the Rhine and is rehearsing an attack there. A double race against time begins.