In the video, two men are demonstrating self-defense techniques in a gym. One man is wearing a black shirt and khaki pants, while the other is wearing a black shirt and glasses. The man in khaki pants is holding a knife in his right hand and is being attacked by the man in the black shirt. The man in the black shirt is using his left hand to block the knife and his right hand to grab the man's arm. He then uses his left hand to push the man's arm down and disarm him. The man in the black shirt then grabs the man's right hand and twists it, causing the man in the black shirt to let go of the knife. The man in the black shirt then uses his left hand to push the man in the black shirt away from him. The video is a demonstration of how to defend oneself against an attacker with a knife.