In the video, a woman is standing in a gymnasium surrounded by a group of children. She is wearing a blue shirt and red shorts and is holding a yellow and blue volleyball. The woman is demonstrating how to properly serve the ball, using her right hand to toss the ball up and her left hand to hit it over the net. The children are attentively watching her, and some of them are holding volleyballs as well. The gymnasium has a wooden floor and a green wall in the background.