One day, a little girl named Lily went to the park with her mom. Lily was very happy. She loved to play on the swings and slides. While playing, Lily saw a pretty rock. She picked it up and put it in her pocket.
After a while, it was time to go home. Lily wanted to show her mom the pretty rock. But when she looked in her pocket, the rock was gone! Lily was worried. She told her mom, "My rock is gone. Can we search for it?"
Lily and her mom searched all around the park. They looked under the swings and by the slides. Just when they were about to give up, a little boy came up to them. He said, "Is this your rock? I found it by the sandbox." Lily was so happy and surprised. She thanked the little boy and went home with her pretty rock and a new friend.
