The video shows a group of children participating in a martial arts class. They are practicing a forward roll on a matted floor, half of which is red and half of which is blue. Some of the children wear martial arts uniforms, some with yellow belts, while others wear casual clothes. One child rolls forward, stumbling and then crawling on his hands and knees to regain his composure. Other children are either sitting or kneeling, appearing to be waiting their turn. Large windows provide natural light, and there is a room visible through the glass wall in the background, as well as light-colored flooring and exposed ceiling lights.