Dizzy and her friends are all experiencing troubling dreams. Dreams of burning houses, two mysterious sisters, and the Hollow Oak, along with all the Haven reduced to a wasteland. To make matters even more unsettling, the magical tree has been acting strange, as if warning them or, maybe, calling out for help. While Troy struggles to overcome his previous notorious reputation at school and Kyle clashes defiantly with his overbearing mother, the five friends discover the woods is facing its most powerful threat ever: the town of Oak Hollow itself.