Season 1:
![Crack](https://image.tmdb.org/t/p/w185/qQXj5OjEqkcBAutkb7brVZUS6AU.jpg)
With the top-ranking student gone, Park Seo-hui should be a shoo-in for the top spot. But competition never dies, and neither does guilt.
![Destination](https://image.tmdb.org/t/p/w185/fQtWyf0zIIctGfUA6fCZAtCmONc.jpg)
In the middle of the night, a taxi driver picks up a woman on an empty street. By the time he arrives at her destination, she's nowhere to be seen.
![Special Guest](https://image.tmdb.org/t/p/w185/2XdysYHDOPXe9lKlaZHPgKKBUFF.jpg)
Sae-rom livestreams a virtual housewarming party with a spooky surprise for her viewers. But when the camera turns off, the real host takes over.
![Curiosity](https://image.tmdb.org/t/p/w185/mtS5Uh2aRrXZEEIxDGkACISsX73.jpg)
No matter how much she tries, she can't outrun a creature on the prowl. No matter how long she runs, she can't escape the dark walls of the school.
![Red Shoes](https://image.tmdb.org/t/p/w185/EqFFgi9xUuaqb25ptAMhSXJmap.jpg)
A classmate’s death spurs rumors for some and guilt for one. When an overwhelmed pupil asks to meet, teacher and student come together half-way.
![Dimension](https://image.tmdb.org/t/p/w185/miLMK1ccb9NbzwxL5w0t57qlqXV.jpg)
Dying to get to the bottom of an inexplicable case, a detective follows instructions written by a missing boy and experiences a new dimension.
![Threshold](https://image.tmdb.org/t/p/w185/tKVoSiG8p60MylVAM7EXLpr6noA.jpg)
Hak-su's wife reminds him to leave the talisman hanging above their bedroom door. But one lone night, he decides to test his luck and its powers.
![Birth](https://image.tmdb.org/t/p/w185/2Rdy14gHj3hVgRqwaE5epjxfpoZ.jpg)
After a shaman practices forbidden black magic, the spirits punish her by haunting her soul, overtaking her body and delivering a little terror.