Kim Ki-hae
Kim Chi-yeol
Series
When mysterious alien spheres start invading the world, high school students are called upon to join the world's first war against extraterrestrial forces.
Available in US
stream
Season guide
10 episodes available
For 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.
After 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.
Two 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.
On screen
Kim Chi-yeol
Im Woo-taek
Lee Chun-ho
Park Eun-young
Guk Young-su
Doh Su-chul
More from the vault
The first vehicle gets attacked by a sphere and turned over. The soldier dies on the spot, and So-yeon gets badly injured. The students decide to leave the vehicle and find a shelter nearby. Soon, they find a construction site office where they can hide and rest. However, their peace doesn’t last long. Meanwhile, Lieutenant Lee goes against the order and steals a vehicle to rescue the students.
Kwon Il-ha
Jang Young-hoon
Kim Duk-joong
Kim You-jung
Kim In-hye
Roh Ae-sul