Build a movie plot around this: Who enters Su-yeon's room? Eun-joo
The movie opens in a mental hospital where a teenage girl by the name of Su-Mi is suffering from shock and psychosis. She is being questioned by a doctor who shows her pictures of her family and asks if she can speak about the day that led her to being admitted to the hospital.The next scene shows her returning with her father and sister, Su-Yeon, to the family's secluded estate near a lake. The two sisters are reluctant to go inside the house where their stepmother awaits. Instead they go down to a pier by the lake where they relax by putting their feet in the water and enjoy the sunshine.Soon, they are called back to the house where they are greeted by the stepmother with a forced welcome. She chastises them for making her wait and taunts them by asking if they are feeling better after having been away. The two sisters are unresponsive and quickly leave to other parts of the house.At a tense family dinner, the stepmother announces she has invited the sister's uncle and his wife to dinner the next day. Su-Mi tells her stepmother she will not eat with them and the two sisters leave the table. Su-Mi tells Su-Yeon that if their stepmother ever goes after Su-Yeon to let her know.That night as Su-Yeon goes to sleep, she hears noises and the door to her bedroom creakily opens and a female hand sneaks around it. Su-Yeon pulls the covers over her head only to have them pulled back by an unseen force. Terrified, she runs out of her room to Su-Mi and tells her that someone has come into her room.When Su-Mi goes to investigate, she only finds her father sleeping, but her stepmom catches her and tells her not to wake him. She rejoins Su-Yeon and comforts her, telling her that she will always be with her and they fall asleep.Later, Su-Mi has a nightmarish dream about blood and a hand desperately slapping at the floor. She wakens to see something moving in her room. Crawling along the floor is the apparition of a woman whose face is covered by long black hair. The wraith becomes aware that Su-Mi is looking at her and she...