At the age of 8, Park Ju Hyeong is adopted and sent off to Italy. Now an adult, he is known as Vincenzo Casano.
He is a Mafia lawyer and consigliere. ( Advisor and dispute reconciliation expert.) Warring factions within the Mafia force him to flee to South Korea. There he falls in love with Hong Cha Young. a lawyer who will do anything to win a case. Vincenzo manages to achieve some social justice there, and in his own way.
Jang Jun Woo is an intelligent and hardworking first-year law intern at the firm, who is polite and sincere. Despite his boyish charm and good looks, Jun Woo can come across as awkward and naive. Prone to making mistakes, he is often in trouble at work.
Song Joong Ki as Vincenzo Cassano/Park Joo Hyung
Jeon Yeo Bin as Hong Cha Young
OK Taecyeon as Jang Jun Woo
Kwak Dong Yeon as Jang Han Seo
Kim Yeo Jin as Choi Myung Hee
Yoo Jae Myung as Hong Yoo Chan
Yang Kyung Won as Lee Cheol Wook
Jo Han Chul as Han Seung Hyuk
Kim Yoon Hye as Seo Mi Ri
Choi Deok Moon as Tak Hong Shik
Jung Sung Il as Kang Shin Wook
Yoo Sung Joo as Nam Sung Beom
Song Young Chang as Baek Kyu Min