4 Dark Kings

Hidden behind the walls. Moving within the darkness. And can only be seen through shadows.

That's the life of Dark Kings.

But things will go upside down and they will soon find themselves stepping out of their usual zones to finally expose themselves in front of the deadliest people in the world. The whole Underground City will know their existence, including the people they ought to protect.

But will things really go the way they want it to be?