When he receives world that his childhood friend Madeline Usher is dying, retired soldier Alex Easton races to the House of Usher where he, after encountering a nightmare of fungal growths and possessed wildlife, recruits a British mycologist and a baffled American doctor to unravel the truth, in this retelling of Edgar Allan Poe's classic "The Fall of the House of Usher."

When her beloved mama falls ill from the ever-creeping mold overtaking their world, 12-year-old fairy Canary Mossheart, armed with only a bucket and a prayer, sets out to find a magical, underground lake with healing powers but instead finds a terrifying secret.