Joon-hee, a fourth-year assistant manager at Hanyang Heavy Industries gets assigned to the human resources department. As the shipyard suffers a dearth of orders, the creditors instruct the HR to restructure the company. Although reluctant to do so, the team supposes that it is inevitable for keeping the company afloat. The HR proceeds to make the restructuring as smooth and efficient as possible. In an attempt to set the criteria for dismissal in company’s favor, the team first tries to elect employee's representatives who will cater for the demands of management. Some of the so-called blacklisted employees who are well aware of the conventional procedure start to put on a brake…

Born between a Sorrikkun (a traditional musician) father and a Gokbi (a dirge singer) mother, Dong-hyuk follows their legacy and lives out his life teaching Gukak (Korean traditional music) at a university. Then one day, as Dong-hyuk's wife Yeonhee becomes stricken with Alzheimer's disease, Dong-hyuk 's successful life gets hard.

Two friends, Moon-ho and Jong-kyu, in their mid-thirties now, have known each other since childhood. As time passes, they feel more and more sorry of their younger years. In search of adventure they are ready for all kind of acrobatics, for example, to make love spontaneously, with a woman they meet for the first time. Moon-ho finds Yun-jung through the internet to have an extramarital sexual affair. Jong-kyu goes out with his first love, Soo-hyun, for the first time in ten years and together they head for a hotel... But the story goes on as if the two couples had never met...

Ko-bong has a huge crush on Gye-soon who works at a fast food restaurant without knowing that the girl he love is a spy from North Korea.

Ji-eun, a member of North Korea's dance troupe and the daughter of the North Korean leader, escapes to the South after one of their perfomances. Eager to explore the liberal life in Seoul, Ji-eun searches for a new life of freedom in South Korea. She soon comes across Joon-ho, a leader of a local rock band. Their relationship then takes unexpected turns as they become closer to each other. Meanwhile, the intelligence agency in South Korea learns of a conspiracy being orchestrated by the American CIA to disrupt the peace on the Korean peninsula; the CIA plots to secretly kidnap Ji-eun. Secret forces from the North and South reluctantly agree to work together to prevent a possible war between their two countries.