In the video, a person is seen using a toy train to push dominoes on a tiled floor. The toy train is red and yellow, with a blue and yellow engine. The dominoes are arranged in a line and are of various colors including red, green, yellow, and blue. The person uses the toy train to push the dominoes, causing them to fall in a chain reaction. The tiled floor is white, and the person's feet are visible in the frame.