What would you do if your best friend was:     1. Imaginary?     2. An oversize blue chimp in surfer shorts? (Potentially embarrassing, but hey, no one else can see him . . . right?)     3. Proposing a plan to help you improve your life?     4. Did we say imaginary?     5. Driving you crazy?!?! Now you have an idea of what Willie Ryan’s life is like when he meets Dodger. It’s the beginning of a lot of trouble—and a friendship you’ll never forget!