The moment the Grace family moves into the dilapidated Spiderwick Estate, strange things begin to happen. Jared is a curious, adventurous boy who quickly seeks out and finds the hidden laboratory of his great great uncle Arthur Spiderwick. He unleashes a mysterious force when he locates a field guide full of the secrets of the magical creatures that inhabit the forest surrounding the mansion. His twin brother Simon is calm and reserved. He is the...

Warned away from magic all of his life, Callum endeavors to fail the trials that would admit him to the Magisterium only to be drawn into its ranks against his will and forced to confront dark elements from his past.

When Mallory and Jared attempt to rescue Simon from goblins, they use a magical stone which enables them to see things that are normally invisible.

When the Grace children go to stay at their Great Aunt Lucinda's worn Victorian house, they discover a field guide to fairies and other creatures and begin to have some unusual experiences.