Season 1

A high school student dreams of becoming an architect. However, she had to drop out of school after suffering from brutal school violence. Years later, the perpetrator gets married and has a kid. Once the kid is in elementary school, the former victim becomes her homeroom teacher and starts her thorough revenge towards the perpetrators and bystanders of her bullying days.

1. 

   1. Episode 1

   2022-12-30 · 47m

   Tormented by her high school classmates and with nowhere to turn for help, Moon Dong-eun sinks into despair before deciding on a new mission in life.

2. 

   2. Episode 2

   2022-12-30 · 51m

   With Park Yeon-jin's wedding on the way, Dong-eun's revenge rolls out according to plan. Meanwhile, a fateful encounter at a hospital takes place.

3. 

   3. Episode 3

   2022-12-30 · 50m

   After securing the services of an amateur sleuth, Dong-eun uncovers scandalous secrets that she leverages for the next phase of her scheme.

4. 

   4. Episode 4

   2022-12-30 · 47m

   Already on edge over the past resurfacing, Yeon-jin grows more anxious when she learns about her daughter's new homeroom teacher — and of a sudden death.

5. 

   5. Episode 5

   2022-12-30 · 48m

   While Ha Do-yeong comes across an intriguing game opponent, Yeon-jin realizes her deepest secrets are at stake when she tries to intimidate Dong-eun.

6. 

   6. Episode 6

   2022-12-30 · 51m

   Son Myeong-o's sudden absence causes tension in the friend group. Dong-eun finds her trust in Kang Hyeon-nam tested.

7. 

   7. Episode 7

   2022-12-30 · 49m

   Dong-eun shares her traumatic past with Joo Yeo-jeong, who has unfinished business of his own. A new plan is put in place for Hyeon-nam's daughter.

8. 

   8. Episode 8

   2022-12-30 · 54m

   Do-yeong meets with Choi Hye-jeong to find out more about his wife — and her past. Yeon-jin digs into Dong-eun's private life.

9. 

   9. Episode 9

   2023-03-10 · 53m

   Questions arise over Myeong-o, Dong-eun gives Yeon-jin a chance to come clean about her past, and the circumstances of Yoon So-hee's death are revealed.

10. 

    10. Episode 10

    2023-03-10 · 52m

    Yeon-jin threatens Hyeon-nam after discovering her involvement with Dong-eun. Yeo-jeong devises a way to get the truth out of Yeon-jin.

11. 

    11. Episode 11

    2023-03-10 · 53m

    Hye-jeong finds an incriminating recording on Myeong-o's tablet, and Hyeon-nam receives an unwelcome visitor as she prepares to send her daughter abroad.

12. 

    12. Episode 12

    2023-03-10 · 53m

    Dong-eun's end game comes into focus as she sends Jae-jun a troubling package and orchestrates a plan to take down Yeon-jin and Lee Sa-ra.

13. 

    13. Episode 13

    2023-03-10 · 54m

    As Sa-ra and Yeon-jin deal with the aftermath of their crumbling reputations, Dong-eun learns the details behind Yeo-jeong's private struggles.

14. 

    14. Episode 14

    2023-03-10 · 54m

    Yeon-jin and Shin Yeong-jun panic over Myeong-o. Dong-eun takes care of a lingering problem. Yeon-jin's mother schemes to remove a threat.

15. 

    15. Episode 15

    2023-03-10 · 60m

    Do-yeong issues an ultimatum. Dong-eun demands a piece of evidence be handed over. Yeon-jin attempts to do damage control after old videos appear online.

16. 

    16. Episode 16

    2023-03-10 · 71m

    As the final pieces of Dong-eun's revenge plot slot into place, she considers what comes next — and what it will mean for Yeo-jeong.