The video shows a close-up of a human brain with a focus on the frontal lobe. The brain is pink, and there are red veins visible. The video zooms in on a specific area of the brain, where a white tooth is seen moving towards the brain. The tooth appears to be a molar tooth, and it is moving from the right side of the frame towards the left. The background is a solid dark blue color, and there are no other objects or text visible in the video.