The video shows a plasma ball in action. The plasma ball is a spherical glass device that contains a mixture of gases that are electrically charged. When the plasma ball is turned on, it creates a stunning display of purple and blue electric arcs that shoot out from the center of the ball. The electric arcs move in a random pattern, creating a mesmerizing effect. The plasma ball is placed on a dark surface, which makes the electric arcs stand out even more. The video captures the beauty and complexity of the plasma ball's display, showcasing the intricate patterns and movements of the electric arcs.