During a night out, the group stumble upon a pair of flesh-eating female ghouls and capture one of them; they begin a sadistic game, which ultimately leads to disastrous consequences.

This idea, however, was eventually disregarded as the project evolved into a more personal work inspired in part by the backlash the director was receiving at the time for a widely publicized affair.

Renhao mockingly confesses to his crime, stating that he needed the money to tune Kuo Feng's motorcycle scooter.

Lin is then restrained by the neck with an animal control pole, threatened by Renhao with corneal perforation from a wall dart, and released.

She then encourages Lin to accept the blame for the crime, and assigns the three male bullies to work with him, under the guise of them being the class's most popular individuals and with the intention of making the four boys closer.

At the end of their day, they come across an elderly war veteran of the National Revolutionary Army's 29th Broadswords unit suffering from dementia.

Back at the elderly home, the war veteran, traumatized by the abduction of his compatriots, dons his old uniform and with broadsword in hand, begins singing an army song (中國的駱駝), inviting the ghoul to find him.

Lin does some research on the ghouls, identifying the younger monster as Lee Shiu Jen who went missing in 1985, alongside her sister, known as the Voodoo Master.

From the news article Lin finds, it appears that the two went missing when they killed their parents, with the Voodoo Master using the dark arts to conjure a poison involving female menstruation, with the effects having backfired spectacularly as seen by the two girls' current state.

They further torment the monster by spraying blood at her, and terrorizing the ghoul by putting its head in a bird cage and dancing around it wearing face paint.

Contrary to his past behavior where he would congratulate the prankster and laugh along, Ren Hao beats the perpetrator to the point of hospitalization, in front of the entire class and Ms. Lee.

During the disciplinary meeting after the event, Ms. Lee, a devout Buddhist, attempts to correct Ren Hao's behavior with spiritual guidance.

Infuriated at the mockery Ren Hao makes of her attempts, she slap him repeatedly, and humiliates him by mentioning his family circumstances, with his alleged father being a criminal, and his mother being a prostitute.

During a basketball game, several hours after drinking the monster's blood, Ms. Lee appears to have a stomachache and having something run though her left eye.

Soon after her attempts to get to the medical room, Ms. Lee bleeds out black blood from her anus and spontaneously combusts upon contact with the sun.

The older ghoul begins systematically hunting down individuals wearing the school's uniform, regardless of their involvement with her sister's predicament.

Sihua is on the bus at the time and manages to take a picture of the monster before the ghoul notices Si Hua's bracelet with her sister's teeth on it, and gruesomely kills her.

Ren Hao plans to lock both monsters in the maintenance room, then pour gasoline in through the sprinklers and throwing a match down the ventilation pipe.

Lured to the war veteran's room by the sound of her sister's cries, the monster follows arrows leading to the pool during the night.

The beam of light strikes the younger ghoul, who immediately begins burning from its effects and is unable to escape it due to the restraints.