Karigurashi no Arietti (Arrietty, the Little World of Thieves) is an adaptation of Mary Norton's novel The Thieves. It is directed by Hiromasa Yonebayashi. Shô is a 12 year old boy, who is convalescing at his grandmother's house in a remote old house. Under the floor of this house, a family of small men, barely a few centimetres tall, have settled and are hiding from human eyes. But Arietty, the family's daughter, and Shô meet and from there a romance is born that will turn the very life of his community upside down.