There is a naive, emo, never grew out of his teens, youth prophet, who initially is obsessed with death and dying, and who btw does nothing to commit suicide, and instead runs away from life, and that's when he witnesses a gruesome death by inceneration at the hands of dark and selectively wrathful creatures, who I don't know if this has been established as a fact later on in the series, but only kill the worst of humans. So, he gets inspired by these messengers of death, and creates a cult. Other youth are getting attracted to the cult, as more incidents happen involving these three beasts. Halfway through the first episode, I already can't stand this mopy fanatic dude acting like a very righteous, sane, cool, and above everyone else. It's annoying. I'm done. I hope I spoiled it enough for you to not waste your time. Just as bad and overhyped rating as of the other Korean show, Signal.