The video shows a group of people in a gym, with one man wearing a black vest and knee pads. He is seen practicing self-defense techniques with another man who is wearing a black shirt. The man in the vest throws a punch and the man in the shirt blocks it, then the man in the vest kicks him in the head. The man in the shirt falls to the ground, and the man in the vest stands over him. The other people in the gym watch the demonstration.