Once upon a time, in a small house, there lived a little boy named Tim. Tim loved to play with his toy train. One day, Tim's toy train broke. He was very sad.
Tim went to his mom and asked, "Mom, can you fix my train?" His mom looked at the train and saw that a tight screw was loose. She said, "I can try, but we need to raise some steam to make it work again."
So, Tim and his mom went to the kitchen. They boiled some water to make steam. The steam went into the train, and the train started to move! Tim was very happy.
But then, the train went too fast. It went around the house and made a big mess. Tim's mom tried to stop it, but she couldn't. The train crashed into a wall and broke again.
Tim was sad, and his mom said, "I'm sorry, Tim. We can't fix the train anymore." And they both learned that sometimes, things can't always be fixed.
