The moment the Grace family moves into the dilapidated Spiderwick Estate, strange things begin to happen. Jared, a curious, adventurous boy, 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 but is rapidly drawn...

They may have escaped the maze but Thomas and his fellow Gladers face their greatest challenge yet: searching for clues about the mysterious and powerful organization known as WCKD. Their journey takes them to the Scorch, a desolate landscape filled with unimaginable obstacles. Teaming up with resistance fighters, the Gladers take on WCKD's vastly superior forces and uncover its shocking plans for them all.