What starts as a normal excursion for friends Ben, Leo, Jonas, Özzi and Sophie at a campsite near Berlin is to turn into a breathtaking adventure in the underworld of a former military site. When Ben suddenly disappears and the four friends searching for him come across a creepy man in the woods who suddenly collapses before their eyes, they have no idea that they only have 12 hours to save not only Ben, but also the whole world.