In the video, a person is seen using a caulking gun to apply caulk around the edges of a rectangular hole in a purple wall. The hole is cut out to expose the wiring inside. The person is wearing a blue shirt and is holding the caulking gun in their right hand. The caulking gun is blue and white in color. The caulk being applied is white. The person is applying the caulk carefully, ensuring that it fills the gaps around the edges of the hole. The wall appears to be drywall, and there is a screw visible in the wall near the hole. The video is shot from a close-up angle, focusing on the person's hand and the hole.