An orphaned boy raised by underground creatures called Boxtrolls comes up from the sewers and out of his box to save his family and the town from the evil exterminator, Archibald Snatcher.

Sixteen-year-old Poppy has everything her unlimited credit cards can buy, and a spoiled attitude to match. After a final thoughtless prank, her exasperated father ships her off to boarding school in England. There, Poppy meets her match in a stern headmistress and a class full of girls who will not tolerate her selfishness.