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The King's Point Killer has disappeared, but the Birch's inspiration lives on in another young high school girl. When Rory is bullied online by her crush, she summons the protective spirit to seek revenge.

Trapped in the Birch's garden, Evie can hear another young, vulnerable girl, Rory, following in the footsteps of the King's Point Killer, and plots her escape.

Rory summons the Birch to take revenge on her crush. Returning to King's Point, Evie rushes to get to Moses before the Birch does.

With baby Laura in tow, Evie meets Rory- a girl who would love to be her twin sister- to warn her about the Birch's twisted power. Learning that her revenge spell worked, Rory targets her next victims.

While Rory continues her quest for revenge against everyone who's wronged her, Evie finds refuge with Jihan, a social worker who believes Evie is a young mother fleeing an abusive relationship. But Jihan's brother, Razi, isn't so trusting...

Rory puts her dark plan in motion, preparing to sacrifice hundreds of her classmates. When the Birch attacks at the community centre, Jihan must decide if she's going to trust Evie's word or walk away.

Rory livestreams her last message as she seeks revenge on everyone who ever hurt her, while Evie and Jihan go to a place where nothing grows to meet the one other living person with knowledge of the Birch.

Rory celebrates her 17th birthday with cupcakes and her mother tied up with vines. Can Evie stop her in time to prevent mass murder?

Evie is pulled back to the Birch's garden, while Rory enacts revenge against her tormentors. Even if Evie can escape, is there any way to stop the Birch?

Jihan, Razi and Evie square off for a final showdown with the Birch. But a mother's love never dies...