In the video, a person is seen holding a clear plastic bag filled with water. The person then places the bag into a larger container filled with water. The water in the bag begins to rise and bubbles can be seen forming inside the bag. The person then removes the plastic bag from the container, and the water inside the bag continues to rise and bubble. The person then places the bag back into the container, and the water inside the bag continues to rise and bubble. The person repeats this process several times, each time placing the bag into the container and then removing it. The water inside the bag continues to rise and bubble throughout the video.