Once upon a time, there was a little boy named Tim. Tim loved to play with his toy train. He had a long track and a cheap, red train. Tim would run the train on the track every day.
One day, Tim's friend, Sam, came to play. Sam saw the train and said, "I know how to make it go faster!" Tim was excited and asked, "How?" Sam said, "We can add more tracks!" So they added more tracks to make the train go faster.
As they played, the train went faster and faster on the new tracks. Tim and Sam were very happy. They played with the train all day and had lots of fun. From that day on, Tim and Sam became best friends who loved to play with trains together.
