A disgraced idol comes face-to-face with the demons of her past when she enters a competition that turns out to be a deadly trap. After a shocking scandal that abruptly ended her teen popstar career, eighteen-year-old Sunny Lee spends her days longing for her former life and cyberstalking her ex-BFF and groupmate, Candie. The two were once inseparable, but that was then - before the tragedy and heartache they left in their wake. In the here and now, Sunny is surprised to discover that Candie is attending a new K-pop workshop in her hometown. Candie might be there chasing stardom, but Sunny can't resist the chance to join her and finally confront their traumatic history. Because she still can't figure out what happened that horrible night when Mina, the third in their tight-knit trio, jumped to her death. Or if the dark and otherworldly secrets she and Candie were keeping had something to do with it.