The video shows a person's hand holding a yellow and black Lego piece and moving it back and forth. The Lego piece is attached to a larger Lego structure, which appears to be a robotic arm. The arm is made up of various Lego pieces, including gray and black bricks, and yellow and black connectors. The person's hand is manipulating the Lego piece, demonstrating how it moves within the structure. The background is blurred, but it appears to be an indoor setting with a wooden surface.