The summary is:
The speaker tells a horror story about Dea, a student who lived in a dormitory that had an old sewing machine under the stairs. The sewing machine belonged to a nun who died after losing her best friend Resita, another student who was abused and committed suicide. The sewing machine could only be seen by some people, and it was haunted by the spirits of the nun and Resita. Dea was one of the people who could see it, and she was curious about it. She was attacked by the ghost of Resita, who wanted her to stay with her. She was saved by another student named Yuni, who recognized Dea's resemblance to Resita. Dea was injured and hospitalized, and she learned the tragic history of the nun and Resita from another nun. She also learned that she was not the first one to see the sewing machine, and that it still made noises at night. The speaker invites the listeners to share their own horror stories and ends the video.
Here are the key facts extracted from the text:
1. The narrator's friend, Dea, had a strange experience in a dormitory.
2. Dea was a high school student at a Catholic Foundation school.
3. Dea lived in a dormitory provided by the school.
4. One day, Dea found an old sewing machine in a storage room under the stairs.
5. The sewing machine was still working, and Dea was curious about it.
6. A nun, Sis Yuni, warned Dea not to go near the sewing machine.
7. Dea was given a bracelet by the nun, which she was not allowed to remove without permission.
8. Dea's friends, Evelyn and Risma, did not believe that the sewing machine existed.
9. Dea's other friend, Fitriana, whispered to Dea to take the sewing machine, but Dea didn't.
10. Dea had a strange and terrifying experience, and she was found unconscious with injuries.
11. The nun explained to Dea's mother that the sewing machine was connected to a tragic event in the past.
12. A nun had died after sewing clothes for a student, Resita, who had also died.
13. The sewing machine was said to be haunted by the nun's spirit.
14. Dea was physically similar to Resita, which may have been why she was targeted by the sewing machine.
15. The school kept the location of the sewing machine a secret.