The video shows a colorful cartoon train with a happy face on the front. The train is blue with a red and yellow hat on top. The train moves along a track in a playground setting with trees, a bicycle, and other toys in the background. The train is followed by animated letters that appear one by one, each with a face and eyes. The letters are in different colors and sizes, and they move in sync with the train. The letters are accompanied by the text "A B C AND D" in yellow letters.