Once upon a time, there was a little boy named Billy who lived in a small town. He had a dog named Sparky, and they were best friends. They would play together every day, and Sparky would always protect Billy from bullies.

One day, Billy and Sparky were playing in the park when Sparky ran away. Billy was heartbroken. He searched everywhere for Sparky, but he couldn't find him.

Billy put up posters all over town, and he asked everyone he knew if they had seen Sparky. But no one had seen him. Billy started to lose hope. He thought he would never see his best friend again.

One day, Billy was walking home from school when he saw a familiar face. It was Sparky! Billy ran over to Sparky and hugged him tightly. He was so happy to have his best friend back.

Billy took Sparky home, and they were both so happy to be together again. Billy told Sparky how much he loved him, and Sparky wagged his tail. Billy and Sparky lived happily ever after.