Once upon a time, there was a little boy named Tim. Tim liked to play with his big red ball. One day, Tim saw a high hill near his house. He had an idea. He wanted to push his ball up the hill and watch it roll back down.
Tim started to push his red ball up the hill. It was hard work. Halfway up, he met a small bird. The bird said, "Why are you pushing the ball up the hill?" Tim said, "I want to see it roll down fast!" The bird wanted to help, so they pushed the ball together.
At last, they got the ball to the top of the hill. They were very happy. But when they let go of the ball, it didn't roll down. Instead, it started to float up into the sky! Tim and the bird were surprised. They jumped and tried to catch the ball, but it went higher and higher. They knew they couldn't get it back, but they became good friends. From that day on, Tim and the bird had many fun adventures together, and their success in reaching the top of the hill made them feel proud.
