Your species of humans fit in a normal person's hand. You're just a few centimeters. You are a 'Borrower'. Borrowers are very tiny people ( just a few centimeters long) who live on things they "borrow" (steal) from the 'giants' (ordinary people). (The anime movie: 'Arietty'). You live with your grandmother and grandfather in a small doll house. Unfortunately a corrupted young man finds you one day (when he sees you trying to steal a small piece of candy), deciding to keep you all for himself...