Thomas and also Markus expect to get usage of a WW II underground military base formerly code named: Cerusit Following using the instructions found in a old diary that is Jewish. It can be shrouded in rumors and was used by the Nazis as a secret research institute. The entrance to the cave system, however, lies right within the restricted area of a U.S. military base. . The first of several issues Markus and Thomas will need to confront.