The video shows a large spider in a glass enclosure. The spider is black and has long legs. There is a caterpillar in the enclosure as well. The spider is moving around the enclosure, and the caterpillar is crawling on the ground. The enclosure has a metal grate on the side and a plastic lid on top. The spider is the main focus of the video, and it is seen from different angles as the camera moves around the enclosure.