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.

Upon being sent to live with relatives in the countryside due to an illness, 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.

Young Mary follows a mysterious cat into the nearby forest and discovers an old broomstick and a strange flower. Mary finds herself at Endor College — a school of magic run by headmistress Madam Mumblechook and the brilliant Doctor Dee. But there are terrible things happening at the school, and when Mary tells a lie, she must risk her life to try and set things right.