Mood: The mood of the video appears to be energetic and playful, with a sense of excitement and drama. The theme seems to be related to entertainment, possibly a song or a dance performance, given the title 'WAT WAT WAT' and the overall aesthetic. The emotion conveyed is lively and attention-grabbing.

Environment: The setting of the video seems to be a dimly lit room or stage with a red-lit background, suggesting a nightclub, concert, or a theatrical performance. The presence of a curtain on the left side of the image adds to the theatrical or performance-like atmosphere.