The psychological debate between the dominant sadistic coach and the brat student. Lady is a sadistic personal trainer and is with her student Natasha. Lady is strict and Natasha is stubborn under orders. The personal trainer does not hesitate to apply physical punishments such as slaps in the face, spitting, hair pulling and tying up, she does so with a cold smile while Natasha grinds her teeth in frustration and sometimes even disobeys instructions, defying the trainer's authority but This only serves to further infuriate Lady, who sees Natasha's stubbornness as a challenge to her authority.