The Pony Pals have discovered a secret trail to the Pony Pal Lodge. On the way to their hideout, the girls discover a smoldering campfire. When they follow the tracks going away from the campfire, the Pony Pals discover another secret hideout. Does it belong the person who set the fire? The Pony Pals discover that Tommy and Mike have been lighting campfires in the woods. When the girls warn them about the dangers of fire, the boys get angry and steal the girls' ponies.