In the video, there are two cats. One cat is standing on a chair, and the other cat is standing on the floor. The cat on the chair is holding a blue string in its paw and is moving it back and forth, while the cat on the floor is watching and trying to catch the string with its paw. The cats seem to be engaged in a playful activity, and the cat on the chair is the one initiating the play. The room they are in appears to be a living room, with a couch and a window visible in the background. The cats are both black and white, and the string they are playing with is bright blue, making it stand out against the neutral colors of the room.