Cha, Ji-won: Starring Lee, Jin-woo

He is laid-back, upbeat and loves to joke around. He has entered the naval academy because his best friend Min Sun-jae did. Though Sun-jae was always one step ahead of him in the class rankings, he never felt any jealousy towards his friend. He is popular for being a leader who is considerate to his team. He got engaged to Mary but after his father’s death he had to call off their engagement. While investigating the death of his father, he discovers the betrayal of the people he trusted.

Kim, Swan: Starring Moon, Chae-won

Her family was killed in the tsunami when she was young. She was found orphaned, and grew up in Thailand without the origin of country. She is impulsive and free-spirited and there is an aura of joy around her. At the age of 18, she opened her own juice stand where she sold watered down juice to unsuspecting customers. From time to time, she would scavenge hunt for wallets discarded in trash dumps by pickpockets to collect ID cards, which she would sell to passport forgers.

Min, Sun-jae: Starring Kim, Kang-woo

He is the president of Sunwoo Construction, a subsidiary of Sunwoo Group. After the unforeseen death of Ji-won’s father who also was the Sunwoo Chairman, he led an aggressive M&A push that catapulted the Sunwoo Group into the top 30 companies in Korea. He is an admired businessman and a member of the nouveau riche. But his image is a façade. He betrayed his best friend due to greed and blind ambition.

Seo, Woo-jin: Starring Song, Jae-lim

He graduated at the top of his elite law school class in Korea. He believes in the power of the media and the public. His goal is to stand against corruption and injustices in society by using an approach that is a mixture of humor and parody. With only a staff of four, he oversees the publication of a general news periodical that covers culture, business, sports, society and entertainment in a tiny office.

Yoon, Mary: Starring Yoo, In-young

She is the wife of Min Sun-jae, President of Sunwoo Construction. She is beautiful with an icy demeanor. In high school, she had a crush on Ji-won. Her father was a career soldier and general so she had a strict upbringing but she loved Ji-won so much that she dared to lie to her dad and break all the rules. But their relationship did not last long. Ji-won’s dad died under mysterious circumstances and Ji-won disappeared soon after. While grieving over Ji-won, Sun-jae appeared and proposed to her.