Mood: The mood of this video appears to be intense and ominous, with a sense of foreboding. The theme seems to revolve around gangsters, terrorism, and possibly crime, given the title 'Gangster's Terror'. The emotion conveyed is one of fear and tension, hinting at a dark and gripping narrative.

Environment: The environment or setting of the video seems to be a dark and possibly nighttime setting, given the dark background and the lighting focused on the protagonist. It could be an urban setting, possibly in a vehicle or near one, judging by the steering wheel visible in the foreground.