Based on a web-toon by writer Yoon Tae-ho, director Woo Min-ho cinematized it, although it was never completed. Inside Men is a crimedrama about the loyalty and betrayal of those who control Korean society. After he secretly helped one of the presidential candidates and a chaebol, Ahn Sang-gu (Lee Byunghun) is discarded. In the meantime, public prosecutor Woo Jang-hun (Cho Seung-woo) has trouble getting promoted because he has no connections and he tries to use Ahn Sang-gu’s need for revenge for his own benefit. The undeniably talented Lee Byung-hun stars in the lead role. Baek Yun-shik and Cho Seung-woo, who starred together in the film The War of Flower (2006), are back together.