Choi Kang-Seok (Jang Dong-Gun) is the best lawyer at prestigious Kang & Ham Law Firm. He is promoted to a senior partner.Go Yeon-Woo (Park Hyung-Sik) has a photographic memory and excellent comprehension skills. He dreamed of becoming a lawyer, but due to his poor background he currently works as a parking valet. To pay for his grandmother’s hospital bill, he takes a job to deliver drugs to a hotel room. While in front of the hotel room, Go Yeon-Woo realizes that he is going into a trap. Go Yeon-Woo is then chased by the cops, but he gets into the secretary’s office for Lawyer Choi Kang-Seok. At that time, a group of people are waiting to take interviews with Choi Kang-Seok. He is going to select a rookie lawyer for the law firm after conducting the interviews. Go Yeon-Woo is then admitted into Choi Kang-Seok’s office. Choi Kang-Seok senses that Go Yeon-Woo is not the applicant they called in for the interview, but he is impressed with Go Yeon-Woo’s intelligence & memory. Choi Kang-Seok decides to hire Go Yeon-Woo as a rookie lawyer even though he does not have a license to practice law. Choi Kang-Seok’s decision could even place his own career in jeopardy.
Mike Ross，一位误入歧途的大学輟學生，为了给重病中的祖母提供更好的看護服務挺而走險。偶然遇见了知名律师事務所的王牌律師Harvey Specter。Harvey从这个年轻人身上看到了自己的影子。所以儘管Mike沒有法學學歷及律師執照，Harvey仍決定冒險雇用Mike為自己的助理律師。在這個工作壓力極大，競爭極為激烈的事務所中，要如何守住Mike的秘密？两个處境截然不同，却又性情相投的人之间又会擦出怎样的火花呢？