The video shows two men standing in front of a chalkboard. One man is wearing a white lab coat and the other is wearing a black suit. They are both writing on the chalkboard with chalk. The man in the lab coat is writing a mathematical equation, while the man in the suit is writing a different equation. They both seem to be focused on their work and are not interacting with each other. The chalkboard is filled with various mathematical equations and formulas.