The Old Mr. Simmons was thinking about his coming birthday in his quiet room. In these days, everyone was scared to celebrate their birthday or to do any party because of the unknown notorious criminal who called himself Den, had killed many celebrants.

The reason behind the killing wasn't known yet.

The most strong detective in New York couldn't catch him, and can't even detect of who the Den really was.

Mr. Simmons wants to celebrate his birthday, so that he can receive many expensive gifts from his riches children, grandchildren, and friends, but he doesn't want to die.

A noise from outside dragged him out of his thinking, he almost have a hypertension. He then realized that the noise didn't come from outside.

The noise was born in his room. He saw his granddaughter kneeling before five men at the door. The five men wore black clothes and hide their faces behind black masks.

At first, he thought Den must be with them.

"Who are you? What do you want? Today isn't my birthday, and I wo