Seen it?
Duty After School
Streaming on (US) 
See all
When mysterious alien spheres start invading the world, high school students are called upon to join the world's first war against extraterrestrial forces.
Highest-rated episodes all ranked
- 01
School EscapeTwo people from Class Two die. To prevent chaos, this news is not yet known throughout the entire school. After their deaths, students of Class Two get sick of all the hardcore training and try to escape school to go back to their homes. However, all their attempts go to waste and the biggest attack of the spheres begins. - 02
Question the SpheresFor a year, people learn to live with the spheres without suffering any specific changes. Even with the alien-looking spheres floating all over the sky, the CSAT is what matters the most to seniors of Sungjin High School. When the exam is just around the corner, one of the spheres drops on a military camp for the first time, and more shocking news awaits them. - 03
Military Training BeginsAfter spheres from the sky drop to the ground, military training begins for the students to ensure their safety. However, the students find it too demanding and have a difficult time. As students head to the shooting range to learn how to shoot, they get caught off guard and fall into a crisis. Meanwhile, a student gets killed by one of the spheres.
Castfull cast & details
Episodes by season
Season01
- S01E01Question the SpheresMarch 31, 2023For a year, people learn to live with the spheres without suffering any specific changes. Even with the alien-looking spheres floating all o
- S01E02Military Training BeginsMarch 31, 2023After spheres from the sky drop to the ground, military training begins for the students to ensure their safety. However, the students find
- S01E03Season's bestSchool EscapeMarch 31, 2023Two people from Class Two die. To prevent chaos, this news is not yet known throughout the entire school. After their deaths, students of Cl
- S01E04
Become the VillainMarch 31, 2023The first vehicle gets attacked by a sphere and turned over. The soldier dies on the spot, and So-yeon gets badly injured. The students deci - S01E05
Will We Ever Go Home?March 31, 2023Chun-ho tries to make sure that the kids all survive so they can return safely to the camp. The kids after having gone through a common stru - S01E06
Fight or FlightMarch 31, 2023After a heated encounter with the spheres, the group picked up some survivors. However, the heavily traumatized survivors have a hard time b - S01E07
Disagreement Among ClassmatesApril 21, 2023Children in Class 3-2 who have become accustomed to both the sphere and death. I find laughter again, but I didn't know that a crack was for - S01E08
Prisoners at Yongwon PenitentiaryApril 21, 2023Platoon Two encounter prisoners at the Yongwon Penitentiary. Since there are no prison guards, they have been locked up without any food sup - S01E09
For Whom the Bell TollsApril 21, 2023While trying to save Bo-ra, Soo-chul sacrifices himself. Everyone wonders what they should do with his body when suddenly someone mentions t - S01E10
End of the WarApril 21, 2023After aborting the mission, the kids walk for days but get to nowhere. However, they reach an amusement park and have fun as if it is their
Keep exploring top shows
ShortcutThe essential episodes
Short on time? The pilot-to-finale shortcut, only the episodes that matter.
MatchupCompare with another showTwo shows' episode ratings on one chart — settle it.
NetworkBest TVING showsMore from the same network, ranked by rating.
GenreBest drama shows & filmsThe top of the drama pile, across both mediums.
GenreBest sci-fi & fantasy shows & filmsThe top of the sci-fi & fantasy pile, across both mediums.