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.

Lee Gwang Jae is the son of a rich family who is reckless and immature. His father dies and leaves behind large debts. Gwang Jae promises to pay off his debt for his father's honor, but it's not as easy as he thinks. Kim Young Ha supports Gwang Jae with her positive personality and love, giving encouragement to him whenever he needs it.

A mother who unfairly lost her young son, takes revenge against the perpetrator who has been forgiven by the law and heals her wounds.

Would you trade your poor but loving family for a life of riches? When Seung Cheon gets his hands on a magical spoon that allows him to switch lives with his rich best friend, he thinks it’s a no-brainer. But life-altering decisions are always accompanied by a sense of doubt, and with only three chances to change his mind, Seung Cheon has to decide which of his two possible futures is worth keeping.

Choi Sangeun is a single-life helper with 13 years of career. Her customers are those who need a wife for their public life under social pressure. Jeong Jiho is Sangeun's MWF husband client who has been with her for 5 years. While short-term, abusing clients on TTS are driving Sangeun mad, new long-term contractor Kang Haejin appears and takes up the TTS husband schedule. With two different men, MWF husband and TTS husband, Sangeun's week flows romantically crossing the borderline between public affairs and private emotions.

The series is about the office workers of Marketing Team 3 at the home appliance headquarters of Gaus Electronics—a multinational company. It highlights the highs and lows of corporate life, and love and friendship between the employees.

An ignorant but strong-willed man and an upper-class woman who struggles through life, work to fall in love.

In 1987, bloodied man Soo-ho jumps into a women's university dormitory in Seoul. Yeong-ro, a female student who fell in love with him at a group blind date, tends to his wounds as the dormitory is ensnared in intense surveillance. As Soo-ho's secrets unravel, he must eventually face the conflict between his heart to Yeong-ro and responsibility to his comrades, as well as to his sibling who awaits him in his home country. What will be of their fate?