14-year-old Arrietty and the rest of the Clock family live in peaceful anonymity as they make their own home from items borrowed from the house's human inhabitants. However, life changes for the Clocks when a human boy discovers Arrietty. The Clock family are four-inch-tall people who live anonymously in another family's residence, borrowing simple items to make their home. Life changes for the Clocks when their teenage daughter Arrietty is discovered.