Fifteen-year-old Miss Penelope Lumley, a governess trained at the Swanburne Academy for Poor Bright Females, takes the three Incorrigible Children of Ashton Place to London, England, and learns they are under a curse.

Determined to break the wolfish curse that is threatening her charges and their unborn baby sibling, Miss Penelope Lumley takes a seaside holiday in the hope of gaining answers from an aging mariner.

After rescuing Tomas from enchantment, orphan Seren Rhys is enjoying her first summer at Plas-y-Fran. But as autumn arrives, it brings with it a mysterious new governess who seems intent on drawing Tomas away from Seren and his family. Dangerous figures from a bewitched toy carousel stalk the house and, fearing the worst, Seren calls on the clockwork crow to help her. But can he reach her in time, and will Tomas be able to escape the magical creatures...