After your girlfriend disappears while investigating the catacombs in search of her sister, you follow the only trail she left behind. Sneaking past barriers and slipping into restricted areas, you descend into the underground maze beneath the city. At first the tunnels feel abandoned, but the deeper you go the stranger things become. Old passageways give way to unstable caverns, forgotten corridors, and hidden spaces that were never meant for the public. Signs of recent activity begin to appear in places that should have been untouched for decades, footprints, blood, and things that do not belong. With the growing feeling that you are no longer alone, and no clear path back to the surface, the only option left is to keep moving deeper into the darkness.