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.