Mood: The mood of the video is intense and action-packed, with a sense of urgency and danger. The theme appears to be based on a true story, possibly related to crime or terrorism, given the presence of guns and a cityscape in the background. The overall emotion conveyed is one of suspense and anticipation.

Environment: The setting of the video appears to be an urban environment, likely Mumbai, given the title 'Mumbai Saga'. The cityscape in the background suggests a metropolitan area with tall buildings and a busy atmosphere. The presence of guns and bullet splatters implies a violent or crime-ridden setting.