Male masochists are sent to an underground dungeon for reconditioning. Captured while trying to escape their mistress, sold into servitude due to debt, or willingly seeking degradation—each man arrives at the facility through different circumstances. The beautiful female instructor in charge is strikingly cruel and intensely sadistic, her personality a stark contrast to her elegant appearance. She reprograms these men, transforming them into perfect sexual playthings designed to fulfill the desires of dominatrices. Through relentless training involving humiliation, shame, corporal punishment, and torture, she exerts complete control over their minds and bodies, evolving them into entirely new beings.