The Loud House Movie: The Secret World of Arrietty

Plot summary:

Arrietty, a tiny teenager, lives with her parents and her siblings in the recesses of a suburban home, unbeknown to the homeowner and housekeeper. Like others of her kind, Arrietty remains hidden from her human hosts, but occasionally ventures forth from beneath the floorboards to borrow sugar cubes and other supplies. A secret friendship returned when 10-year-old Zach Loud reunited with Arrietty, but their relationship could spell danger for Arrietty's family.