No Go Jin is the most popular mathematics instructor in the private education field and the CEO of GOTOP Education. Even though he has only a high school level education, he has achieved all of his success due to his extreme intelligence. He seems like a perfect man with a handsome appearance, high IQ, and wealth. He is also narcissistic. One day, he is suddenly warned that he will be murdered. Lee Shin A works as No Go Jin’s secretary. She is a diligent and responsible employee. Due to her quiet and introverted personality, she has little presence with her boss No Go Jin and her colleagues at work. Her colleagues begin to recognize her, because she has worked for the notorious No Go Jin for more than 1 year. She then learns that she does not have much time left to live.
as Noh Go-jin
as Lee Shin-ah
as Baek Soo-young
as Oh Se-gi
as Lee Su-ho
as Chu Ok-hee
as Park Yang-tae
as Lee Yong-gu
as Kang Min
as Kim Cha-Bae
as Gong Hee-Cheol
as Ma Eun-Jeong
as Gong Pil-Sun
as Kim Hye-Sun
as Joo Joon-Pal / "John"
as Michelle Lee
as Hwang
as Lee Beom-Gyu
as Park Eun-Hee
as Lee So-ra
as Jo Jong-Oh
as GoTop Teaching assistant
as GoTop staff
