The video starts with a group of orange fish swimming in the blue ocean. Then, a colorful train appears, floating in the water. The train has a blue body, yellow wheels, and a red roof. It also has a face on the front and a green light on top. The fish swim around the train, and a purple whale appears, swimming next to the train. The whale has a friendly face and a yellow ball near it. The video ends with the train and the whale swimming together in the ocean.