“Never to Lose” concerns the men of Homicide Unit 3, who are in dire straits at the moment. While Unit 3’s cops are full of ambition and talent, they never seem to crack a case. The team is comprised of Detective Koh, a 15 year veteran, Detective Kim (Min-jun Kim), a rookie eager to make a name for himself, Detective Koh, a married man who spends more time on the job than with his wife, and Detective Ryung ( Sang-mi Nam ), who can’t get taken seriously by her peers because she’s a woman. While at a party with his girlfriend, Kim happens upon information about a drug deal that could get the team the respect they’ve been looking for. But what the team gets into turns out to be not just a big drug bust, but a case that makes Homicide Unit 3 the target of the largest drug lord in Korea .