"Military Prosecutor Dobermann" tells the story of Do Bae-man, who became a military prosecutor for money, and Cha Woo-in, who became a military prosecutor for revenge, meeting and breaking down the black and rotten evil in the military and growing into a real military prosecutor.

After a series of unfortunate events, Mok Hae-won quits her job in Seoul and goes back to Bookhyun Village, in Gangwon Province, where she briefly lived when she was in high school. There, she meets again her former classmate and neighbor, Im Eun-seob. He also came back to Bookhyun after leaving the village for a few years and now owns a bookstore.