In the "Summer of Secrets," twelve-year-old Tyler Davis is determined to pitch for his all-star team. But he has never thrown a strike in his Little League career. And eleven-year-old Alexandria Wilkins is determined to play in a local tennis tournament. But she doesn't have a coach to teach her how to play. So the best friends decide to be Dream Doers and work together to achieve their goals. Along the way, they encounter Hector Magruder, the hermit who lives in the woods. From him, they learn about a silent enemy that is far more dangerous than the neighborhood bully, Zachary Graham. What they don't know is that the more time they spend with Hector and the closer they come to discovering his secrets, the more danger they create for themselves and their families.