A girl wakes up in a huge secret laboratory, then accidentally meets another girl who is trying to protect her house from a gang. The mystery girl overthrows the gang with her unexpected powers, and laboratory staff set out to find her.

During the 1970s, in Kunchon, there were women divers who were able to dive without equipment, including two best friends Choon-ja and Jin-sook, Jin-sook's brother and Hammer. They always collected seafood under water for living. But, as fewer factories started to be built near the beach, the women divers started to have trouble with what they were doing for living. Without any choice, the ship crews decided to join the smuggling business in the water to seek a way for their living. But the smuggling business in their village got too big for Jin-sook's family to handle and the peaceful village was gradually broken.

Mi-yeong loved dancing and singing as a child, and her dream was to become a musical actress. Because of her bigger physique, her dreams are often made fun of by her friends, and by her early 30s, she's living as an ordinary office worker who lost her dreams. One day, Mi-yeong's video of herself unintentionally becomes a symbol of misogyny. Her videos are increasingly getting viral on the Internet, and as to escape from all this, Mi-yeong sets off on a solo trip and meets Dae-hyeon at a guesthouse. Dae-hyeon, who had a complex about his thin physique, became a symbol of male hatred on the Internet. These two are hurt by becoming targets of hatred among various people gathered at the guesthouse, but they understand and comfort each other.

Carter, who awakens two months into a deadly pandemic originating from the DMZ that has already devastated US and North Korea. He who has no recollections of his past finds a mysterious device in his head, and a lethal bomb in his mouth. A voice in his ears gives him orders to avoid getting killed and he's thrown into a mysterious operation while the CIA and North Korean coup chase him close.

Jang Se-chool is the boss of a gang. He has been in love with Kang So-hyun for the past 3 years, even though she constantly rejects him and tries to push him away. Having had enough, she tells him that she can't be with him because she wants to be the first lady of Korea.

On 31 January 1968, 31 North Korean commandos infiltrated South Korea in a failed mission to assassinate President Park Chung-hee. In revenge, the South Korean military assembled a team of 31 criminals on the island of Silmido to kill Kim Il-sung for a suicide mission to redeem their honor, but was cancelled, leaving them frustrated. It is loosely based on a military uprising in the 1970s.