In a small North Korean village near the border of China, there are believers who get together in an underground church, away from the eyes of the persecuting government. When the missionary from China, their only support route, is cut off, things begin to get very tense. Chulho, who had been arrested along with his wife, returns. After losing his wife in the interrogations, Chulho had been released and unseen for 2 years before coming back to his home, claiming that he had been commanded by God to lead the believers across the border and into South Korea. The brothers wonder if Chulho is trustworthy, and whether it is the right thing to do to leave their homeland.

Yong-soo is an ex-soccer player who lives in a small coal-mine village in North Korea with his wife and young son, Joon. Although living in extreme poverty like many other families in North Korea, the family is happy just to be with each other. Then one day, Yong-soo's pregnant wife becomes critically ill. Let alone medicine, Yong-soo can't even find food for her in North Korea. So he decides to secretly cross the border to China hoping to find the medicine for his wife.

After defecting from North Korea, Loh Kiwan struggles to obtain refugee status in Belgium, where he encounters a dejected woman who has lost all hope.

Ji-woo, an outcast at a prestigious private school, meets Hak-sung, the school janitor who is actually a mathematical genius who defected from North Korea.

Caught in forbidden love, Yong Joon defects from North Korea, leaving Jae Sung behind. Years later, a reunion forces him to choose between past and present.

Despite the close bonds among fellow defectors, Cheol-jun—a young North Korean defector—felt isolated while hiding his gay identity. Finally, he takes his first step into South Korea's vibrant gay community and forms close ties after meeting Yeong-jun at a casual gathering. Yet, a trivial misunderstanding shatters these fragile bonds.

Poongsan has the unenviable - and death-defying - job of delivering messages across the North and South Korean border to separated families. When South Korean government agents ask him to smuggle in In-ok, the lover of a high-ranking North Korean defector, into the South, the damsel and rescuer fall in love instead.

Chang-ho, 12, becomes friends with a North-Korean immigrant about the same age who just crossed the Dooman river, border between North-Korea and China. His mute sister and his wise grandfather accompany him through a series of misfortunes.

Making use of her Chinese that she had picked up while living in China, Han-young obtains her tour guide-interpreter's license and starts working as a guide in Korea. She gets used to her new surroundings and gains good results at work. However, she is forced to face challenges and changes as she loses touch with her brother In-hyuk, and the number of Chinese tourists decreases due to political tension between Korean and China.

A North Korean refugee, Jung-Nim, is trying to find a new life in South Korea, with people suspecting that she is a spy.

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After losing her son while defecting from North Korea, Myung-sun meets a fellow defector, Sin-tek, who is the leader of the Church of the Fire. Through him, Myung-sun begins to learn about the doctrines of resurrection as they settle at a small town in South Korea.