Larry Haskin finds his summer filled with baseball and caring for three stray dogs, until his six-year-old brother Paul's interruptions start hurting his game and the price of dog food rises higher than his income.
Larry can't stop thinking about the growling dog in the alley. He already has three strays in his backyard. How can he afford to take care of another one? When his brother Paul points out a strange mark in the alley, Larry has a mystery to solve. What is the dog protecting? What is really going on in that dark alley?