The video shows a person using a trowel to apply plaster to a wall. The person is seen smoothing the plaster over the wall, making sure it is evenly distributed. The person's movements are deliberate and precise, indicating that they are experienced in this task. The wall appears to be in the process of being plastered, with some areas already covered in plaster and others still bare. The plaster is a light gray color, and the trowel used is a flat metal tool with a wooden handle. The person's actions are smooth and continuous, suggesting that they are skilled at this type of work.