When mysterious alien spheres start invading the world, high school students are called upon to join the world's first war against extraterrestrial forces.
Seasons 1 season, 10 episodes
Genre Action, Adventure, Science Fiction, Fantasy, Drama
Director Sung Yong-il
Cast Kim Ki-hae , Shin Myung-sung , Shin Hyun-soo , Im Se-mi , Ahn Do-gyu
Country South Korea
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