Queen Momae Nagato summons a normal man to her home, locks him in, and subjects him to repeated training sessions, molding him into a full-fledged masochist and turning him into her loyal servant. The sight of a regular man writhing in pain from her discipline, gradually succumbing and transforming into a devoted slave, excites Queen Momae beyond measure. Today, another ordinary man has fallen into her trap and been locked inside the room. This chamber is fully equipped with every imaginable torture device and is known as the "M-boy Training Room." No man has ever left this room without being turned into a masochist. Joined by her already-converted servants, the first day of training for this new recruit is about to begin.