A family of five, including 15-year-old twins Jared and Simon, moves into the Spiderwick Estate in Michigan, unaware of the magical creatures that inhabit the estate. Upon arrival, Jared discovers a mischievous boggart, leading him to uncover a world of mythical beings. With the help of his great-aunt Lucinda, Jared must use his great-grandfather's field guide to protect his family from the sinister Ogre, Mulgarath.

The next episode follows Helen Grace and her children as they relocate to the...