The video shows a robotic arm with a glowing light at the end of its arm. The arm is moving in a dark environment, and the light is shining brightly. The robotic arm appears to be performing a task, possibly assembling or manipulating an object. The light at the end of the arm is the main focus of the video, and it is the only source of light in the otherwise dark setting. The robotic arm moves smoothly and with precision, suggesting advanced technology and control.