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.

In the near future, Sophie tells her son the story of how she met his father: a story that catapults us back to the year 2021 where Sophie and her close-knit group of friends are in the midst of figuring out who they are, what they want out of life, and how to fall in love in the age of dating apps and limitless options.