Summer 1944. Nikolas Brandenburg has returned to Düsseldorf from Paris. The former commissioner must go into hiding in his parents' house, as he has joined the French resistance. One night, when a severely wounded man is lying at his door, he not only reconnects him with old companions but also leads him into the orbit of the top-secret uranium project. An operation that is meant to help Hitler achieve victory. Nikolas will do everything to prevent this.