Mr. Bratt gives Margot an old scrapbook he found in the basement of the Biddle House. As she flips through the pages, she's sent on an unexpected journey to 1993 when her mom was a student at Port Lawrence High. As Margot delves deeper into the book, she learns secrets that have terrifying consequences.
A group of five high schoolers who unleash supernatural forces upon their town and must all work together - thanks to and in spite of their friendships, rivalries, and pasts with each other - in order to save it, learning much about their own parents' teenage secrets in the process.