The movie begins with Lisa, a high school student, being bullied and severely beaten by a group of girls. After being hospitalized, Lisa meets a mysterious girl named Zombie who helps her to exact revenge on her bullies. Lisa also reunites with her twin sister, Jenny, who had been separated from her since childhood. Together, they devise a plan to take down the bullies. However, in a surprising twist, it is revealed that Jenny is actually a product of Lisa's imagination, a manifestation of her multiple personality disorder. As Lisa receives therapy, she begins to heal and eventually decides to start a new life in another country. The movie ends on a hopeful note, with Lisa finding closure and happiness.
Here are the extracted facts from the text:
1. The movie begins with a girl named Lisa escaping from her bullies in the forest.
2. Lisa falls down some stairs and hits her head, leaving her in good condition.
3. A girl finds Lisa and takes her to the hospital.
4. The police believe the bullies are from Lisa's school.
5. Lisa's father doesn't care about her and tells the detective he doesn't want to know what happens to her.
6. When Lisa wakes up, the detective tries to talk to her, but she doesn't tell him anything.
7. The teacher comes to the hospital and asks the detective not to tell the police who the bullies are.
8. The bullies' mothers come to the hospital and try to threaten Lisa, but the detective asks them to leave.
9. Lisa's twin sister, Jenny, is introduced, and it is revealed that they were separated when they were little.
10. Jenny agrees to help Lisa get revenge on the bullies in exchange for money.
11. The principal wants to transfer Lisa to another school to avoid a scandal.
12. The bullies are let go by the police due to lack of evidence.
13. Jenny takes revenge on the bullies, and they are punished for their actions.
14. Lisa and Jenny celebrate their birthday together for the first time.
15. Lisa decides to go back to school, thinking that Jenny will protect her from the bullies.
16. Nayón's mother asks the principal to transfer Lisa to another school, but the principal refuses.
17. Lisa is bullied again, and Jenny takes revenge on the bullies.
18. The police come to the hospital to take Jenny away for what she did to Nayón.
19. Detective Kim discovers that Jenny is Lisa's twin sister.
20. Lisa is revealed to have multiple personality disorder and imagines Jenny as a separate person.
21. Lisa goes to therapy and reveals that she imagined Jenny to cope with her loneliness.
22. Lisa's mental health improves, and she decides to move to another country to start a new life.