After the assassination of President Park, martial law has been declared. A coup d’état bursts out by Defense Security Commander Chun Doo-gwang and a private band of officers following him. Capital Defense Commander Lee Tae-shin, an obstinate soldier who believes the military should not take political actions, fights against Chun Doo-gwang to stop him. The conflict between the two grows while military leaders are holding their decision and Defense Minister is gone. In the midst of chaos, the spring of Seoul that everyone longed for heads to unexpected direction. Following the assassination of President Park in 1979, various military factions wrestle for control during a violent coup in this tense South Korean period action drama.