It's not easy being Ho Goo, a low-key guy who can neither score a date nor score high enough on his civil service exams, which he's failed 7 years running. But when he has a chance reunion with national swimming champion Do Hee, the most popular girl of his high school, his luck begins to change — perhaps for the worse. After staying out all night with Do Hee, Ho Goo experiences a rude awakening when he realizes that not only has Do Hee left him, she's also pregnant!

Take a nostalgic trip back to the late 1980s through the lives of five families and their five teenage kids living in a small neighborhood in Seoul.

This series follows people who work diligently at Incheon International Airport. Lee Soo Yeon graduated from prestigious KAIST. He begins work at Incheon International Airport and gives himself a goal of six months to get used to working there. Lee Soo-Yeon is a mysterious man who keeps people at a distance. There, he meets Han Yeo Reum. She is a new employee in the passenger service team. She wants to be a perfectionist, but her reality is a little different. She makes a lot of mistakes.

Following the case of the murder of a professor at South Korea's top prestigious law school, professors and students become suspects in the murder.

Twin brothers Woo-sin and Soo-hyun lose their father in a murder case. Twenty-two years later, the brothers seek to clear their father's name.