The fantastic trilogy for the anniversary! For the first time in the 50-year history of the great science fiction cult saga, novels written by German authors are being published. In the Lembatta Cluster, a sinister region of space on the edge of the Federation, a dangerous evil is growing: fanatical followers of the "Harmony of the Spheres," who call themselves the Purifying Flame, are calling for an all-encompassing war against the corrupted realms of the Alpha and Beta Quadrants. The pathological expansionist desires of humans, Klingons, and other races must be stopped - by any means necessary. The crew of the U.S.S. Prometheus desperately tries to resolve this diplomatic and military crisis. In doing so, Captain Richard Adams and his team are not only fighting against the hostile Renao but also against war-hungry Klingons, led by the glory-seeking captain of the I.K.S. Bortas.