As an asteroid hurtles towards Earth with nothing to stop it, one determined teacher fights to keep her former students safe — no matter the cost.
Episodes
Football, Bloody Hell!
Traumatized by a tragedy that keeps haunting her, Jin Se-kyung vows to keep her loved ones safe and plots revenge against the perpetrators.
Love Is Back
Suspecting Se-kyung's role in the latest murder, Kang In-a gives her a warning. But as Se-kyung plans her next move, a surprising visitor greets her.
I Have Butterflies...
Ha Yun-sang's friends celebrate his sudden return, despite the mystery surrounding it. Meanwhile, Se-kyung realizes she's being watched.
Felix Culpa
Se-kyung confides in In-a about the ominous threats she's been receiving. The two later embark on a dangerous mission to confront the criminal.
The Girl with a Cat
Despite her recent win, Se-kyung still worries that the threat isn't over. Yun-sang receives an enigmatic proposal involving important missing figures.
Much Ado About Nothing
Disorder during the joint memorial Mass leads to chaos at the church, increasing criticism and scrutiny into the whereabouts of Father Baek.
Arirang; Gone, but Not Forgotten
Se-kyung discovers more about a mysterious training center, and pleads with In-a to investigate it. They soon find darker secrets lie within the building.
Dum Spiro Spero
In the aftermath of the raid, the group encounters pushback from authorities — but they uncover more disturbing details about Father Baek's activities.
Silver Lining
Se-kyung and Yun-sang finally confront Father Baek, who in turn leaves them with a choice, forcing Se-kyung to ask Yun-sang an impossible question.
Exodus, Eclipsed
On the day of the evacuation, Se-kyung and her friends coordinate a plot to get the children to safety. But pandemonium ensues as the plane approaches.
Last Christmas
Accepting the fate of the asteroid, everyone tries to carry on with their lives. But the harsh and grim realities of their last days set in.
Goodbye Earth
With less than 20 days left, survivors solemnly brace for the asteroid. However, Se-kyung remains steadfast in her mission to protect the children.
Top Cast
Ahn Eun-jin
Jin Se-kyung
Yoo Ah-in
Ha Yoon-sang
Jeon Seong-woo
Priest Damiano / Woo Sung-jae
Kim Yoon-hye
Kang In-ah
Kim Yeo-jin
Yeo Mi-ryeong
Seo Ye-hwa
So Joo-yeon
Yoon Seo-ah
Chae Young-ji
Hong Woo-jin
Jang Beom
Kang Seok-woo
Father Baek sang-hyeok
Kim Kang-hoon
Park Jin-seo
