A story about a prosecutor named Jin Jung who is armed with bad manners and delinquency. He breaks down the sanctuaries created by wealth and power, and he even takes down the greedy people living in those sanctuaries. He uses expedient methods over conventional ones, tricks over standard procedures, and delinquency over sincerity in order to stop the corrupt authorities from undermining society.

In 1920, when Korea is under Japanese rule the Korean Independence Army’s Hae-chul and his subordinates are carrying out the operation to deliver funds to the Korean Provisional Government in Shanghai. During the operation Hae-chul is reunited with Jang-ha, a young squad commander, whose mission is to defend Samdunja. They unite and trap the Japanese soldiers in Samdunja, soundly defeating them. Now they’re chased by Japanese troops and Hae-chul finds out that Jang-ha’s mission isn’t over yet. A crucial yet dangerous task is still assigned to him.