In the video, there are four animated characters running down a hallway. They are blue and white in color and have a cartoonish appearance. As they run, a dog suddenly appears and chases after them. The dog is brown and white and appears to be a medium-sized breed. The characters and the dog are running on a wooden floor, and the walls of the hallway are painted white. The lighting in the hallway is bright, and there are no visible windows or doors. The characters and the dog seem to be moving at a fast pace, and there is a sense of urgency in their movements.