Fifteen hours. Ten People. One locked Room. Kali does ́nt understand why she's here. Alongside nine other strangers, all specialists in their fields, she's given a single task: solve the cold case of a girl murdered fifteen years ago. No one knows who brought them here. No one can leave. And as the hours pass, it becomes clear: This isn't just about solving a case, it's about surviving it. Secrets emerge. Trust crumbles. Time is running out.