Ko Tae-Rim (Jin Goo) is an arrogant lawyer and always makes jokes, but his win rate is 100%. He couldn't imagine himself losing a case, and in his eyes, winning a case was the most important thing.
Meanwhile, Seo Jae-In (Seo Eun-Su) is an energetic newcomer. She wants to help clients trapped in unfair situations. Seo Jae In realized that the lawyers who didn't win were all useless and decided to cooperate with Ko Tae Rim.