In the video, a person is seen assembling a Lego structure. The person is holding a black Lego piece and inserting it into the structure. The structure appears to be a Lego castle or fort, with multiple black Lego pieces already assembled. The person's hands are visible, and they are wearing a ring on their left hand. The background is a wooden surface, and the lighting is bright. The person's movements are precise and deliberate as they add each piece to the structure.