The video starts with a close-up shot of a red blood cell. As the video progresses, a virus enters the frame and attaches itself to the surface of the red blood cell. The virus is then shown multiplying and spreading to other red blood cells, causing them to become infected. The video provides a detailed look at the process of viral infection, highlighting the way the virus attaches to and replicates within the cells. The animation is realistic and provides a clear view of the virus's structure and how it interacts with the red blood cells.