How would you spend five million dollars in 30 days? A billionaire's wallet, a bizarre challenge, and an unlikely friendship send two kids on a wild adventure. From the author of The Miscalculations of Lightning Girl. Felix Rannells and Benji Porter were never supposed to be field-trip partners. Felix is a rule follower. Benji is a rule bender. They're not friends. And they don't have anything to talk about. Until...