Olivia Ramirez is nervous about the first day of middle school, but feels certain there is one final adventure to be had on the last day of summer vacation. Olivia is drawn to her neighborhood park where she meets Lori Murray, an unusual but charming blue-haired girl who has just moved to town. Even though Lori wants to be an astronaut and Olivia longs to explore the world beneath the sea, the two quickly become best friends. As they begin the...