However, as the team wreaks havoc in Pyongyang, the five officials, by a majority decision of 4 to 1, abort the plan to avoid an international crisis if the mission is discovered.

Lee swims back to shore and returns to South Korea, where he finds out that the assault team's service and personal records have been erased.

Seven years later, after successfully finishing his education and attaining a doctorate in the United States at the Massachusetts Institute of Technology, Yoon-sung returns to South Korea to fulfil his adoptive father's plan for revenge.

Problems occur as Jin-pyo's revenge plot unfolds, especially when Lee defies his surrogate father on several occasions as they try to identify and kill the officials, known as the "Council of Five".

As Yoon-sung exposes the officials' corruption, the citizens of Korea sense an unseen force of justice that they dub "City Hunter".

The series has received positive reviews[3] and was also a commercial success selling out advertising space at a high price of ₩420 million ($420,000) per episode.