The video begins with a close-up shot of a circuit board on a blue surface. A person's hand is seen holding a syringe filled with a clear liquid, which is then injected into a specific spot on the circuit board. The camera then zooms in on the injected area, showing the liquid being absorbed into the board. The person then uses a soldering iron to heat the area around the injection site, causing the liquid to spread and fill the space. The video ends with the person using tweezers to remove a small component from the board.