While visiting her grandmother's house, Clea Lang uncovers evidence that Grandma might be living a secret life as a hunter and researcher of legendary beasts like Bigfoot and chupacabra. While trying to get his hands on Grandma's research, a shapeshifting cryptid known as the skinwalker invades her home and leaves Clea's grandmother hospitalized. Clea, accompanied by her nextdoor neighbor, Curtis, ventures into the woods searching for more mythical creatures and for some way to help her grandmother. Clea will try to tell the good monsters from the bad as she crashes a gathering of cryptids, befriends a young Bigfoot and follows the trail of the skinwalker.