Working as a security guard for a big company isn't that hard. Most of the time, your duty is to simply monitor the CCTV cameras in the elevators and other areas.

It's usually a nice and relaxing job until one day, you witness a guy killing four important executives of the company in the elevator. He looks at the CCTV camera and smiles, saying, "F*ck! My bad. Well, at least you'll have an interesting evening later."