A series of events during Ruby's freshman year of college send her on a downward spiral, culminated by the arrival of a glamorous alter ego who begins to live a life of her own.

Jonny Baptiste is a reckless teen sent to live with her estranged Aunt Hildie. On the event of her eighteenth birthday, she experiences a radical metamorphosis: a family spell that redefines her called Forevering. When several teen girls go missing at her new school, a mythically feral Jonny goes after the Perpetrator.