The video shows a person assembling a toy train with various colorful blocks. The train has a blue engine and a yellow carriage with a green roof. The person is seen placing blocks on the train, including a yellow block with a dog face, a black block with a mouse face, and a pink block with a mouse face. The train also has a red and blue windshield and a red and blue roof. The person continues to add blocks to the train, including a pink and blue block with a mouse face and a blue and red block with a mouse face. The video ends with the person placing a red and blue block on top of the train.