The legend of a Thunder Team secretly protecting Woolim High was never public acknowledged but nonetheless spread wildly among the student body. For some reason, the team had disappeared and evil began to rack havoc in the school. The last remaining member of the Thunder Team, Teacher Yuri , decided to recruit the badest of all bad students, 007, 187, 747 , Yeol , Hoya and Lucifer, to form a new generation of Thunder Team who would solve the crimes and restore the school back to its former glory.

-inspired by Taiwanese show , Pi Li M.I.T PI LI M.I.T MEMBERS.

Codename: Lucifer

Real Name: Yong Chaemin(You/Reader) 

The female protagonist of Mysterious Incredible Terminator. She is the adopted daughter of a fortune teller named Kim Taeyeon. Her innocence and acting skills make her the perfect secret agent. Her potential skills include following her own instincts, which always leads her to trouble. Her codename in Pi Li MIT is "Lucifer", meaning "Heaven Devil Star"; a name mixed with "Sirius" and "Voldemort". She wants to publish a horror novel, but since she lacks the inspiration, she decides to make use of everything that happens within the school as inspiration.

Codename: 007

Real Name: Kim Myungsoo

-The male protagonist of Mysterious Incredible Terminator. He is the son of a famous international detective named Dr. Tablo, and an unofficial member of Pi Li MIT. Kim Myungsoo aimed to enter the police academy as their best intern, but because he suffered from Ménière's disease, a disease he has had since childhood, his place in the academy was dismissed. He was later sent to Woolim High with his best childhood friend , Lee Sungyeol and was immediately appointed by Teacher Yuri to join Pi Li MIT under the codename "007", as their most intelligent member. Though he did not want to be a member of the group at first, he eventually finds the interest of being a part of it.His intelligence goes beyond most people, but his cold personality shields away his feelings, which makes it difficult for him to let his teammate, Tian Mo Xing, know how he feels about her.

Codename: 747

Real Name: Kim Sunggyu

Very masculine and filled with justice senses. Aims to be the hero whenever something happens. He has been predicted to not be able to live to the age of twenty, which is why he finds joining Pi Li MIT a great opportunity to do something extraordinary before he dies. His codename in the team is "747". Though he lacks intelligence, his speed and hearing goes beyond most people. 

Codename: Yeol

Real Name: Lee Sungyeol

A real kid , although childish, his height tells people that he's serious and scary , but his a huge baby , one of the moodmakers of the team besides Dongwoo , another member. They blend in well together due to their playfulness. A childhood friend of 007(Myungsoo) , joins PI LI M.I.T because of Myungsoo , the one that pursuaded him in too as he loves action , at first not accecpted by Miss Yuri due to his choding-ness,  in the end , he got in by .. his ways.

Codename: Hoya

Real Name: Lee Howon

Although not the brains of the team , Howon is awesome in martial arts also rich like 187(Woohyun) , is generous unlike 187 , he pays for the food everytime they have a meeting. He loves saying cold jokes that ain't funny , but Lucifer always laugh at it. A great non-blood related brother of Lucifer(Chaemin) , joins PI LI M.I.T together with Lucifer. 

Codename: 187

Real Name: Nam Woohyun 

Son of a rich family with an elegant personality and the looks of an idol. He has electrifying eyes, and gathers information from the girls who chase after him. Because of this, Woohyun is appointed to Pi Li MIT as the most resourceful member under the codename "187". A running joke is that he always nicknames his girls "Yeobo" ("Darling/Wifey"). And though he is somewhat of a ert, he is also chivalric.

Codename: Kenya

Real Name: Jang Dongwoo

Another moodmaker with Yeol(Sungyeol) , very funny and childish , loves to buy useless stuff , but some of his useless stuff tends to be in good use when they're in missions , although carrying the heavy bag of useless items , Dongwoo is good at catching people together with 747(Sunggyu). Has a contagious laugh , you'll get addicted to his laugh and would love to set it as your ringtone.

Codename: Miss Yuri/Yuri songsengnim

Real Name: Kwon Yuri 

Daughter of Woolim High's principal, and the leader and founder of Pi Li MIT. She acts as counselor in the school. Yuri is very good at observing people around her, and so finds the four students; 007, Lucifer , 747 , Hoya and 187 , her best choices in making members of her team.She hopes to be the guiding light of students, and never fails to spot those who are feeling guilty. One of her other skills include acting.

OTHER CHARACTERS:

Real Name: Lee Sungjong.

The son of Choi Sooyoung. He was often bullied by his fellow classmates for being protected by his mother and for having no father. Sungjong grew up without a real family, and had lived with a mental illness since childhood.

Real Name: Choi Jinhee

Known as "the God of Death teacher" and "Teacher Angel" for her strict personality. She accepts no mistake in her work. Because she never seems to get any older, people describe her as the devil. She is very protective of her son Lee Sungjong and looks up to people with power and order. And so despises Pi Li MIT because it is gathered with blacklisted students.