When the Grace family moves into their creepy, old Spiderwick Estate, strange things begin to happen. Jared Grace discovers a mysterious field guide written by his great-great-uncle Arthur Spiderwick, filled with secrets about the magical creatures living unseen all around them. With his twin brother Simon and sister Mallory, Jared must learn to believe in the impossible to protect the guide from a dangerous, hungry ogre. This discovery pulls them into a hidden world of fairies, goblins, and boggarts, right in their own backyard.