The video starts with a close-up shot of a cell membrane, which is depicted in a greenish color. The membrane is shown with small bubbles on its surface. As the video progresses, purple particles, which are likely to represent molecules, begin to appear on the surface of the membrane. These particles increase in number and move around the membrane, suggesting some form of interaction or activity taking place within the cell. The video provides a detailed and dynamic view of cellular activity, with the focus on the movement and interaction of molecules on the cell membrane.