Bad Girls from Valley High

Danielle, Tiffany and Brooke lure Charity Chase to a cliff to terrorize her. The plan goes tragically wrong and Charity falls to her death. The trio covers it up, while Drew mourns Charity's loss.

A Romanian exchange student, Katarina, arrives during Mr. Chauncey's class. She quickly makes friends with Drew, drawing Danielle's ire. Katarina's presence unsettles the dynamics at Hundred Pines High.

To sabotage Drew's growing friendship with Katarina, Danielle takes a job at the elderly home where Drew works. She is assigned to look after an old lady and, with Tiffany and Brooke, they raid the cupboard and eat the old lady's chocolates. Their plan to influence Drew backfires as they stumble into a greater danger.

Over the next two weeks, Danielle, Tiffany, and Brooke notice back pains and hair turning gray as they age at an alarming rate. They fear something supernatural is behind the change. The symptoms shake their confidence and push them toward drastic actions.

The girls suspect Katarina is Charity's ghost seeking revenge. They conclude the only way to reclaim their youth is to kill Drew so his spirit can be with Charity. Their plan marks a turning point toward violence and paranoia.

Danielle's eighteenth birthday party sets the stage as they lure Drew to the gorge where Charity died. Katarina reveals she is not Charity's ghost, shaking Danielle's resolve. Brooke tries to stop Danielle from pulling the trigger, Drew disarms her, and a party clown (Chauncey) distracts everyone as Danielle fires, leaving Tiffany and Danielle exhausted.

In the old age home, Tiffany lies on life support while Danielle is barely alive. Mrs. Witt, Charity's grandmother, reveals she heard Danielle bragging about the murder. She confesses she poisoned the chocolate with an aging chemical, using help from her late roommate's husband and his bioscience work; Brooke survives due to self-control.

During Witt's revelation, Tiffany dies and Danielle dies shortly after. The two killers' downfall comes as the truth is exposed and their ages catch up with them. Brooke, Drew, Katarina, and Chauncey cope with the consequences of their actions.

A funeral is held for Danielle and Tiffany with friends and family in attendance, including Drew, Katarina (now a couple), and Brooke after her transformation. Chauncey forgives Brooke, acknowledging she wasn't as cruel as Danielle and Tiffany, and she regrets her past actions. The service marks a somber closure for the trio's cruelty.

In a surreal ending, Danielle and Tiffany awaken in a luxurious room with their youth restored, believing they are in heaven. Jonathan Wharton reveals he had committed suicide to be with Danielle and morphs into the devil, explaining they are actually trapped in hell for their crimes.