In Japanese-occupied Korea, three freedom fighters are assigned a mission to assassinate a genocidal military leader and his top collaborator. But the plan goes completely awry amidst double-crossings, counter-assassinations, and a shocking revelation about one of the assassins' past.

Mu Myeong is a Joseon dynasty headhunter who meets and falls in love with lady Ja Yeong who will become the future Empress Myseongseong. A few years later, Ja Yeong enters the royal palace to marry King Gojong. Mu Myeong still having feelings for Ja Yeong and in an attempt to get closer to her becomes her personal body guard.

Two spies share a secret bond, despite their loyalties. A North Korean assassin is sent to Seoul to kill a dissident, but instead he teams up with a South Korean agent in search for revenge.

Ancient Korea, 1728. Swordsman Kim Ho, guard of King Yeong-jo of Joseon, is demoted and sent to work in Uigeumbu prison. When night falls, the prison is assaulted by the master warrior Do Man-cheol and his powerful henchmen for the purpose of freeing Lee In-jwa, who has been condemned to death for rising up in revolt against the king.

A man joins the national army as a soldier who does haircuts for other soldiers. However, he feels frustrated for being on miscellaneous duties rather than what he was conscripted for.

A vengeful refugee-turned-pirate steals nuclear materials to attack and obliterate the Koreas in a Nuclear Typhoon. A top South Korean naval officer is assigned the task to stop his plans and execute him.

The Imjin War reaches its seventh year in December of 1598. Admiral Yi Sun-shin learns that the Wa invaders in Joseon are preparing for a swift withdrawal following the deathbed orders of their leader Toyotomi Hideyoshi. Determined to destroy the enemy once and for all, Admiral Yi leads an allied fleet of Joseon and Ming ships to mount a blockade and annihilate the Wa army. However, once Ming commander Chen Lin is bribed into lifting the blockade, Wa lord Shimazu Yoshihiro and his Satsuma army sail to the Wa army's rescue at Noryang Strait.

A servant falls in love with a girl whom his master also desires. Although the girl loves the servant, she also longs to improve her station in life.

There was Goo Ma-jeok before there was Kim Doo-han. Goo Ma-jeok had the strongest power in all of Joseon. He was the boss of Umigwan and a legendary man from the streets of Jongno. A new 'Age of Wild Men' begins.

During the reign of King Sejong in the 15th century, the Joseon Dynasty was the embodiment of the perfect state. To the Ming China, the aspiring imperial power, Joseon presented an obstacle to territorial expansion. To protect themselves from war, King Sejong develops a secret weapon to defend their territory and take back their land and supremacy.

Ko-bong has a huge crush on Gye-soon who works at a fast food restaurant without knowing that the girl he love is a spy from North Korea.

Lee Mong-hak and a skilled blind swordsman Hwang Jeong-hak, both long to wipe away corruption and heal the world. Lee Mong-hak creates a rebel army to achieve his goal and get rid of the King.