At Bellrose Academy, an elite private school for the wealthiest students in Thailand, something sinister is lurking in the shadows. One by one, students vanish, only to be found dead behind the mountain that looms over the campus. No one knows why-or who is behind the murders. Giran, a sharp and logical student, begins to suspect that the killer is one of them, one of the privileged students who walks the school's pristine halls. His suspicions grow stronger when Filan, a mysterious new student, arrives at Bellrose just as the deaths start to pile up. Filan is enigmatic, his presence impossible to ignore, and Giran can't shake the feeling that he's somehow connected to the unfolding horror. As Giran's search for answers intensifies, he becomes drawn to Filan in ways he doesn't understand. With each secret uncovered, Giran finds himself slipping deeper into a dangerous game, where trust is scarce, and the line between love and obsession blurs. Can he solve the mystery of the killings before it's too late-or will he fall for the one person who might just be the killer?