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 daughter, Arrietty, is discovered.
Upon being sent to live with relatives in the countryside, an emotionally distant adolescent girl becomes obsessed with an abandoned mansion and infatuated with a girl who lives there - a girl who may or may not be real.
Based on "The Little Broomstick" by Mary Stewart, a strange flower grants a girl magic powers.