Aging assassin Hornclaw has seen it all, but she never expected to mentor a reckless rookie like Bullfight. As their unlikely bond deepens, cracks form in the underworld they navigate together. When Hornclaw discovers someone wants her dead, she's thrust into a deadly game of deception. With enemies closing in and trust in short supply, survival means staying sharp—both blade and mind.

Follows Rim Chul-ryung heading back to South Korea in pursuit of a brutal and secret criminal organization. He teams up again with Kang Jin-tae, who volunteers to work with the North Korean in order to get back on the investigation team after a mistake landed him in the cyber crime department.

Jeong-woo, who grew up with Han-na under their adoptive mother, goes abroad to contribute to a difficult family environment. However, after hearing the news of the death of his adoptive mother in a hit-and-run traffic accident, he returns to Korea, and found out that Cheol-jin, a member of the local organization Taechangpa, and former classmate of Han-na was involved. Meanwhile, Taechangpa joined hands with the Japanese yakuza organization to expand its power. They kidnapped Han-na to catch Jeong-woo, who was tightening them up. This makes Jeong-woo even angrier. The anger of a man who lost everything explodes!