The movie begins with Insu, a boy who has the ability to see ghosts, moving back to his hometown after being bullied in the city. He meets a girl named Ana, who is a ghost, and together they try to uncover the truth behind the death of a girl named Saji, who was bullied to death by a group of students. As the story unfolds, it is revealed that Saji's vengeful spirit is responsible for a series of tragic events, including the death of her bullies. Insu and his uncle, who also has the ability to see ghosts, work to help Saji's spirit find peace and cross over to the afterlife. Along the way, they discover that Saji's death was a result of the bullying she suffered at the hands of her classmates, and that her spirit was driven by a desire for revenge. In the end, Insu and his uncle are able to help Saji's spirit find peace, and the movie ends with Insu becoming a teacher at the school where the events took place, and a new student, Juliana, arriving at the school, hinting that a new story may be beginning.
Here are the key facts extracted from the text:
1. The movie begins with a boy named Insu on a subway.
2. Insu calls his mother to tell her he is fine and might move in with his uncle if things get bad.
3. Insu is bullied by a group of kids who tease him about seeing ghosts.
4. Insu's uncle has the same ability to see ghosts as him.
5. Insu's uncle has a relic that turns when a spirit or ghost is around.
6. Insu meets a girl named Ana who is not alive.
7. Ana tells Insu that she does not remember anything, including her name.
8. Insu's uncle advises him to ignore the ghost of a girl with a mask.
9. A schoolgirl is bullied by a group of kids and is eventually killed by a ghost.
10. The ghost is revealed to be Saji, a girl who was bullied to death.
11. Saji's ghost is seeking revenge on her bullies.
12. Insu's uncle is afraid to leave his house due to a phobia.
13. Insu's uncle helps him understand that Ana is actually Saji's spirit, divided into two personalities.
14. Saji's ghost is haunting the school and seeking revenge on the bullies who tormented her.
15. Insu and his uncle help Saji's spirit find peace and cross over.
16. The movie ends with Insu becoming a teacher at the same school five years later.