In the video, a cartoon dog is standing in front of a green chalkboard. The dog is holding a piece of chalk and writing numbers on the board. The numbers are written in different colors, and the dog is seen writing the numbers 51, 52, 53, 54, and 55. The dog appears to be happy and is smiling while writing the numbers. The background is a simple blue color, and there are no other objects or characters in the video.