The video shows a small hamster running around a cardboard castle. The castle is made of cardboard and has a small tunnel on one side. The hamster is running around the castle and exploring it. The castle is placed on a bed of hay, and there are other toys scattered around the castle. The hamster is small and has a white and brown coat. The castle is brown and has a small tower on one side. The video is shot from above, and the hamster is the only animal in the video.