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Aki and Naoko are childhood friends who are drifting apart as adults. Immersed in her family life, Naoko now has a husband and daughter; Aki, on the other hand, remains single and is on leave from work due to a...

Kim Sun Woo, who spent his school days as a troublemaker, decides to make a change in his life and joins the sea special attack team, which is called Poseidon. Sun Woo works as a promising commando, but he unexpectedly becomes entangled in an unsavory incident after 2 years. He is demoted and is sent to a maritime police office in Gunsan city. Sun Woo's passion cools down and he slowly loses his vision as a maritime policeman. Then one day, Jung Ryul, who has formed a new crime investigation section in Incheon city, visits Sun Woo and asks him to join the team... 

In the year 1868, three young men join the elite Shogitai division of the Shogunate. The Shogitai fights to the end and opposes the dismantling of the feudal military dictatorship known as the Bakufu system.