Once upon a time, there was a little boy named Tim. He liked to play with his toy car. One day, Tim saw a door with a lock. He was very curious about what was behind the door.
Tim tried to push the door, but it was hard to open. He thought and thought about how to open the door. Then, he found a key under a mat. Tim was very happy and excited to use the key.
Tim put the key in the lock and turned it. The door opened, and he went inside. But, oh no! A big, mean dog was behind the door. The dog barked and chased Tim. Tim was very scared and ran away. He learned not to open doors with locks without asking for help.
