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.

Go Man Soo is a world known golf player who was dumped by a former beauty queen, Oh Soo Jung, seven years ago. Their fate becomes reversed when Oh Soo Jung who is now known as an old maid comes chasing after Man Soo who is now a 'golden bachelor' with good looks and money.

Cho Jae Hee is a man in his 40s who is very stubborn and hasn't gotten married yet. His personality is so unbearable that women don't find him attractable nor a good candidate for marriage. However, Jae Hee, is perfect in everything that he does. His life will be surrounded by three different women. Jang Moon Jung is a doctor that he meets one day, Jung Yoo Jin is his neighbor whom he meets due to a disturbance, and Yoon Ki Ran is his colleague at work.