Seol Tae-ho

Nan-hee is slowly coerced into a life of crime by her boyfriend, Park. She is trained in assassination techniques and sent to assassinate the head of the Special Investigation Unit. However she cannot complete her mission because she suffers from pangs of conscience and a deep attraction to the investigator.

Seong Ji-yeon, a female officer of the North Korean army, is discovered by southern forces on a snow covered mountain. She suffers from severe frostbite so she is taken to a military hospital. There she falls in love with a doctor, Captain Lee. However, when he is sent to the front, she is sent to try to survive the hardships of a POW camp.

Dozens of people begin dying daily in the city of Wonsan shortly after the outbreak of the Korean War. Fearing a plague, the United Nations asks that the situation be investigated before they will commit troops.

Ju Yeong-nbok volunteers to work for the North Korean army as a Russian translator. As the political climate in the North deteriorates, his sister flees south. Yeong-bok is worried that her defection will prevent his being promoted in the ranks of the communist party. He breaks up with his girlfriend because she is catholic in order to prove his party loyalty, but Yeong-bok still finds himself blacklisted.

Dong-jin first loses his parents when they are killed by the Japanese military police and then loses his girlfriend to a Japanese sympathizer. Together with Madame Hwang, he devises a plan to kill the colonial magistrate and free his city from Japanese rule.