Anything can happen on Nim`s Island, a magical place ruled by a young girl`s imagination. It is an existence that mirrors that of her favorite literary character, Alex Rover - the world`s greatest adventurer. But Alexandra, the author of the Rover books, leads a reclusive life in the big city. When Nim`s father goes missing from their island, a twist of fate brings her together with Alexandra. Now they must draw courage from their fictional hero, Alex Rover, and find strength in one another to conquer Nim`s Island.