Once upon a time, in a large house, lived a small dog named Spot. Spot loved to play with his ball all day. He would run, jump, and wag his tail. Spot was a happy dog.
One day, Spot saw a big cat outside. The cat was sitting near the exit. Spot wanted to chase the cat, so he demanded to go out. He barked and jumped at the door. His owner opened the door, and Spot ran out.
Spot chased the cat, but the cat was too fast. The cat climbed a tall tree and laughed at Spot. Spot was sad and tired. He wanted to go back inside, but he could not find the exit. Spot was lost and could not go home.
