Leah Reyes is a teenager fascinated with black magic and occult practices. Following the death of Leah's father, her grieving mother decides to move to a remote woodland house for a fresh start, forcing Leah to leave her school friends behind and join her. Leah soon feels isolated and frustrated in the new home, and after a fierce argument with her mother, she wishes death on her. Venturing deep into the forest, Leah performs an occult ritual from one of her books to summon the demon Pyewacket (familiar spirit) to kill her mother. However, Leah bonds with her mother shortly afterwards, and she soon regrets her actions.