Summer, Hanna, and Rodger set out to uncover the mystery behind Summer's missing Grandfather. While searching late one evening, the group is confronted by an inexplicable find: a monster in the woods. Realizing it means no harm, they discover the monster has been trying to communicate with Summer. As the group grows closer to finding Summer's Grandfather, the monster reveals its true intentions. Summer is left with the knowledge and responsibility the monster has bestowed upon her, and the group must come together in an effort to save humankind.