Anything can happen on Nim's Island, a place where imagination runs wild and adventure rules. Here, a feisty young girl named Nim, surrounded by her exotic animal friends and inspired by legends and books, leads an amazing tropical existence that mirrors that of her favorite literary hero: Alex Rover, the world's greatest adventurer. When her island is threatened she reaches out to her hero for help. But what Nim doesn't know is that the acclaimed author of the Rover books is, in fact, Alexandra Rover, a retiring, fainthearted recluse locked away in a big city apartment. Now, as Alexandra nervously ventures forth into the world and Nim faces the biggest challenge of her exciting young life, they must both draw courage from the fictional gallantry of Alex Rover and find strength in one another to save Nim's Island.