The video shows a diagram of the Earth's crust, with a focus on the continental and oceanic lithosphere. The continental lithosphere is shown in a brown color, while the oceanic lithosphere is depicted in a dark blue color. The diagram also includes a red arrow pointing to the subduction zone, indicating the movement of the oceanic lithosphere under the continental lithosphere. The video is a series of still images, with each frame showing the same diagram from slightly different angles or with different labels.