The video shows a close-up of a person's hands as they use a ruler and a red pen to draw straight lines on a piece of paper. The ruler is placed on the paper, and the person uses the pen to draw along the edge of the ruler, creating a straight line. The person repeats this process several times, drawing multiple straight lines on the paper. The ruler is silver with black markings, and the pen is red with a black tip. The paper is white, and the background is a green cutting mat.