She lives in the glowing city of Seoul, thinking her life is ordinary... until one night changes everything. Haneul, 23, is bright, kind, and completely unaware of the world hidden behind the lights. A world where idols are not just idols. Where Stray Kids, ATEEZ and ENHYPEN are connected to something far more dangerous. When she accidentally crosses their path, her life spirals into chaos. She is told to run. To forget. To disappear. But some encounters can't be erased. And some people... you should never meet in the dark.