In 1348, the plague hit Essen, wiping out nearly half the town's population. Subsequently, a group called the Brothers of the Cross – a secret Templar organization – started traveling through Germany promising protection from the plague. Lukas suspected they were after the Ankh, an ancient artifact said to be located somewhere in central Europe.
In 1350, both the Brothers of the Cross and Lukas Zurbug mysteriously vanished. Lukas had two children with Martina Wagner: Christof Ison and Wolfgang Scholz.