The blue-collar town still healing from tragic events that took place 20 years ago. An unknown assailant has begun tormenting a disparate group of teen girls.

After receiving a series of increasingly disturbing texts, Imogen and her newly-formed friend group - Tabby, Faran, Noa, and Mouse - plot to end Karen's reign of terror.

Imogen attempts to connect the dots between her former BFF, her deceased mother, and the mysterious "A". Then, as Sheriff Beasley closes in, the fate of the friend group hangs in the balance.

With her mother's house now on the market, Imogen consults the supernatural for answers. After being forced to spend time with Kelly, Faran notices a string of peculiar coincidences. Tabby remembers a harrowing trauma, and Noa comes face-to-face with a terrifying foe.

Unwilling to part with her mother's house, Imogen throws an epic Halloween rager to raise some cash to save it – and enlists her friends to help.

After bonding over shared trauma, Imogen and Tabby take a road trip to Rosewood, where they double down on their efforts to uncover the truth about past events.

As the annual Millwood carnival approaches, a long-held family secret causes increased tension between Mouse and her mom, Elodie. Meanwhile, Imogen forges an unexpected connection. Faran confronts everything that's been plaguing her.

The friends attempt to get to the bottom of one mystery, while Imogen pursues answers to another. Then, a muchneeded girls' night prompts Sidney to confront her daughter about a long-held secret.

Despite coming clean to their mothers about "A", the friends find their troubles are far from over. In the search for answers, Imogen turns to her estranged father for help, while Tabby considers an unexpected suspect.

With the anniversary of Angela's death approaching, an already vengeful "A" doubles down.The members of the group confront their mothers about what really happened on New Year's Eve and how it Led to them being tormented in by a vengeful masked assailant in the present.