Two friends, Paul and Marcus come across a description of the location of a secret underground bunker from World War II. One of them, armed with a special 3D device that transfers an image “in the first person”, goes down to the bunker, while the other one helps him from the distance, tracking his movements and giving advice. The entrance to the bunker is located on the territory of an American military base. Paul manages to enter the dungeon, although he doesn’t know yet that his visit didn’t go unnoticed. And it’s not only about militants. Something dark and sinister that has been imprisoned for more than 70 years is watching him…