X: Dark Night and Fog

A mysterious organization called X exists in the world but is unknown to the public. What is its existence? A serial disappearance of girls led to the murderer's incredible crime methods. As the police continue to conduct in-depth investigations, the mysterious organization X gradually unravels his mysterious veil? What exactly are they planning? Invisible black hands, horrifying methods, ultra-high technological level, and hidden waves make the police unable to take action and have no resistance... Is it true that evil cannot prevail against good? The system appeared late, please take a detour if you mind... Suspense + thriller + reasoning + brain-burning, don't draw conclusions until the end...