y/n a psychiatrist.........who treat patients ........but this time she assigned for a patient she is regretting now.......... cause he is not a patient but a psycho......... dangerous psycho........... When u assigned to treat a psycho..... Kim y/n a bubbly , kind , sweet and beautiful girl....... 25 years old...........who is psychiatrist and she sign a contract to treat a psycho cause it was requested ..........it's was her first time .......... cause she attend patients not psycho but she sign it cause she thought it's not a big deal but she doesn't know that she sign to her nightmares.......... Park Jimin a total psycho and mafia......... actually biggest mafia.........he torture people till death and give them most terrifying death just for fun........now days he was killing soo many people........... So his frnd Taehyung take him to psychiatrist wanted to know what's going on in his mind ??? why he kills so many people ???? but he don't know that this will happen...... Jimin - why are getting scared ??? ( Smirk ) Yn - s-stay away f-from me......u-u are d-devil......( crying ) Jimin - so u got me ?? ( Laughing ) Let's goo...... let's get to story.......