Having just moved to a new town, Alva is facing a very boring and lonely summer. But when she flees from the oppressive heat into the woods, she encounters Toni, an adventurous girl with a spark in her eyes and a knack for telling stories. Soon, the two are having the time of their lives bathing in the forest lake, building a tree house, and playing an elaborate game of make-believe that transforms the woods into a magical place full of mythical creatures. However, the longer their game continues, the darker the tale of Aurelia, the missing guardian of the forest, and the more reckless and desperate Toni’s attempts to find her become. Can Alva figure out what’s going on and help her friend before it’s too late?