When Sparky the Dalmatian puppy is brought home from the pet store, he is delighted. His new home is a fun and wonderful place. But everything changes overnight when a terrible fire destroys his home and makes him flee into the darkness of a nearby alley. Sparky is forced to live the next few years on the streets, scavenging for food and water. Not willing to succumb to his fate as a lowly street dog, Sparky joins a local fire station in an attempt to make something of his life. Will Sparky's fear of fire and his tragic past force him to quit his new job as a firehouse dog, or will he overcome his fears and become the town's biggest hero?