Thomas and also Markus expect to obtain usage of a WW II underground military base codenamed: Cerusit, after Using the instructions found in a old diary that is Jewish. It was utilized by the Nazis as a research institute that was secret and can be shrouded in rumors. The entrance to the cave network, however, lies directly within the restricted field of a U.S. military base. . The very first of several problems Markus and Thomas might have to deal with.