The video shows a man in a red shirt standing in a pool with a wave machine. He is holding a yellow surfboard and instructing a young boy on how to ride the wave. The boy is standing on the surfboard, and the man is guiding him on how to balance and move with the wave. The pool is surrounded by a blue wall, and there are other people watching from the side. The man and the boy are the main focus of the video, and their interaction is the central activity.