The play tells the story of an ace detective of the anti-narcotics team who was forced to take drugs and became addicted. He used the death of his friend as a clue to uncover a 20-year relationship and a deteriorating friendship.It is directed by 《Trolley》director Jin Wen-kyo, and 《Prosecutor's Biography》screenwriter Li Xian.

Chi Sung plays the role of Zhang Zaiying, a detective from the anti-narcotics team. He is respected by his juniors and trusted by his seniors in the police force.In order to live up to his motto "Success without relationships and support has no weakness", he stayed away from friendships, police work, family, and things he considered dangerous.

He is a policeman who is not bound by anything, has no weaknesses, devotes himself to police work, and always adheres to principles and beliefs.

Tian Meidu plays reporter Wu Yunzhen, who is opinionated and outspoken.She was a Joan of Arc-like person who attacked old-fashioned comments regardless of status and was unfairly dismissed because she couldn't ignore anyone who was incorrect.

Returning to work or changing jobs isn't easy, so she decides to become a junk reporter with the motto “Friendship is Money”.

Kwon Yul plays prosecutor Park Tae Jin.He is a sharp and calm person, known as a wise man among his friends.Jin Jingnan

Playing the role of Won Jong-su, the vice president of the Mold Group who possesses money and power, he is a strong villain.Zheng Shunyuan plays the role of Xu Zhusong, the representative of Two Star Holdings, and is responsible for the pleasant and friendly part.