Upon moving into the run-down Spiderwick Estate with their mother, twin brothers Jared and Simon Grace, along with their sister Mallory, find themselves pulled into an alternate world full of faeries and other creatures.
Ida must transfer to a new school, where she soon realizes the students are unkind to each other. However, that all changes when a new teacher, Miss Cornfield, begins to educate them on the value of friendship and magic.