Take Pippi Longstocking's joie de vivre, blend it with a 21st century urban setting, toss in a dog named Otto for good measure and what do you get? This joyfully carefree story about two unlikely friends. It's a pair of silver sequined sneakers that unexpectedly flips Emily's comfortable, predictable world upside down. Or, more precisely, it's the girl wearing them. The shoes belong to Rani, who moves into Emily's apartment building--and...