Kim Jin Seo and Mo Yoon Hee are high school classmates and rivals whose different family backgrounds shaped their characters and their paths towards love and success in adulthood. Jin Seo develops a warm and cheerful personality as well as superior intellectual ability, while Yoon Hee becomes a beautiful woman with fatal charm. Both women love Lee Sang Hyun, an extremely kind but indecisive man who used to date Yoon Hee but later married Jin Seo. When Yoon Hee's husband, Sung Eun Pil, dies under suspicious circumstances, Jin Seo finds herself becoming involved in the investigation. The process is complicated when the young homicide detective Kang Shin Woo becomes romantically interested in Jin Seo.

A married woman who falls in love with another man, and the young man who tries to seduce her?? as well as the people who chase after them. December Fever is the story of a dangerous love affair between a married woman and a dying man. It introduces us to people with double standards and other falsehoods, as well as people who sacrifice themselves for family. In addition, it??s a story of a father and his dying son as well as a tale about the conflicts between and their mothers-in-law. It holds a mirror to everyday life with comic and interesting characters.

Choi Kang (Eric Mun), a freeloader at home, has a hard time finding a job after being expelled from high school for fighting. He is admired by the gangs for his fighting ability, but his younger brother, working in the prestigious LK Corp., looks down on him. Then a little luck, and a bit of fortune lands him a meeting with the President and a job at the KSA (Korean Secret Agency)...and perhaps a girl or two are coming his way as well.

Do you remember the most exciting moment in your life that made your heart race? Here is a story of a family. You will witness the six most exciting and crucial moments in their lives, which you can experience as well. Created by six writers and six producers, this drama portrays the six different stories of a family. It shows how different points of view influence the characters, their behavior and the story itself. This drama has the characteristics of a reality show. It tells us that the life itself can be interpreted in various ways depending on from where you’re looking at it. ..