Arrietty lives a quiet life with her parents in a warm and cozy home. But, like any fourteen-year-old girl, she longs for the big wide world. And that world is really enormous for Arrietty because she's only four inches tall, and home is beneath the floorboards with scary "human beans" living just above. One day she's allowed to go above to "borrow" a few necessities and meets a human boy. But when he accidentally reveals their hiding place.....Arrietty's adventure has begun!