Deep underground lies a dark and eerie laboratory. Though called a research facility, it secretly hosts bizarre nightly gatherings. Within this hidden chamber, women are lewdly trained and presented as the main attraction of the event. Tonight, the popular and beautiful news caster Yui takes center stage as the main course. Once again, she is dragged in by ropes, forced to display her bound body. Amid the unsettling atmosphere, a new chapter of depravity begins.