Undeground - This is a game that tells the story of how a boy named Mart decided to take a walk around the yard in the evening with his friends. But after they had already gone home, Marth was suddenly attracted by a stranger in a mask. The masked stranger turned out to be a plague doctor, and he offered Marth a ride home. Mart decided to agree, but after they arrived, they found themselves in a completely different place. Now Marth has to get out of it.