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.

In 1592, admiral Yi Sun-sin and his fleet face off against the might of the invading Japanese navy and its formidable warships. As the Korean forces fall into crisis, the admiral resorts to using his secret weapon, the dragon head ships known as geobukseon, in order to change the tide of this epic battle at sea.

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.

Follows Rim Chul-ryung heading back to South Korea in pursuit of a brutal and secret criminal organization. He teams up again with Kang Jin-tae, who volunteers to work with the North Korean in order to get back on the investigation team after a mistake landed him in the cyber crime department.

In 1909, several years after Korea is forced into becoming a Japanese colony, freedom fighters plot the daring assassination of Japan's prime minister during their quest for independence.

October 26, 1979, a presidential assassination shakes the nation. Taking on the defense of Park Tae-joo, the secretary involved in the presidential assassination, lawyer Jung In-hoo enters what would be South Korea's most notorious political trial. Despite Park Tae-joo facing a predetermined sentence due to his military status, Jung In-hoo fights tirelessly to ensure a fair trial, enraged by the trial's unfair proceedings.

A serial killer ruthlessly hunts down a deaf woman through the streets of South Korea after she witnesses his brutal crime.

A delivery man has to flee for his life when he is framed for the assassination of a political candidate and the evidence against him begins to accumulate.

After a prosecution lawyer is framed and convicted for murder, he tries to catch the real murderer from jail with the help of a con artist.