Choi Kwang-je

Gurus in the late Goryeo dynasty try to obtain a fabled, holy sword, and humans in 2022 hunt down an alien prisoner that is locked in a human's body. The two parties cross paths when a time-traveling portal opens up.

Detective Ma Seok-do changes his affiliation from the Geumcheon Police Station to the Metropolitan Investigation Team, in order to eradicate Japanese gangsters who enter Korea to commit heinous crimes.

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.