The video shows a close-up of a horse's leg, with a focus on the knee area. The horse is standing in a field with grass and dandelions visible in the background. The camera zooms in on the knee, and an animation of the knee joint appears, showing the bones and ligaments in detail. The animation is in blue and white, contrasting with the brown color of the horse's leg. The video provides a detailed look at the horse's anatomy, highlighting the complexity of the knee joint.