The video shows a series of images of three skulls, each representing a different stage in the evolution of the human brain. The first skull, labeled as Homo habilis, is the smallest and has the least brain development. The second skull, labeled as Homo erectus, is larger and has a more developed brain. The third skull, labeled as Homo flores, is the largest and has the most developed brain. The skulls are shown in a side profile view, with labels pointing out specific features such as the brain volume, skull size, and teeth shape. The background is black, and the skulls are in a light color, possibly white or beige.