“Cage”—a virtual reality game where you are your avatar. No one knows how it started or who made it, but one thing is for sure: the entire universe is obsessed with it! Siryeon, a young introvert, hops online to break out of his shell, only for his entire team to be slaughtered by in-game serial killer Natriel Gaisha. Natriel may think she's untouchable, but if he can survive long enough to level up, Siryeon just might have the last laugh after all.