Bloop! Bloop! Bloop!
The slight trickling sound of water droplets, gently flowing carelessly through a cracked hole, dripping onto the thick dirty sewage water within the tunnel, breaking the eerie silence of the entire sewerage system.
The pool of thick waste water rippled gently, and what seem like the amputated arm of a human flowed towards the surface of the water, revealing fingers with cracked and almost faded pink paint.
"Ahhhh!!!"
A gut-wrenching inhuman scream rippled through one of the tunnels like a sharp sword. Bouncing off the sewage tunnel walls, echoing for miles.
Tracing the origin of the scream, it came from one of the dark tunnels, leading towards what seemed to be a large abandoned underground lab.
The hinges of the underground lab, swing slightly with the change of water flow. Revealing the interior of the lab. Just the height alone was about a hundred meters and was filled with all sorts of medical equipment.