Lao Qiang --- Xia Hou Bin
Chu Yi Han --- Wang Zi Qi
A rookie police officer, in order to find his mother Lin Ke, volunteers to go undercover and infiltrate the criminal organization once again.
Cheng Fan --- Tian Yu
Cheng Fan is a deeply respected man who sacrificed his own life for the sake of his country and righteousness, while also protecting the child of his senior sister, Chu Yi Han. Despite his carefree and humorous appearance, he is actually a person of deep emotions, loyalty, and subtle thoughts. He provided Chu Yi Han with the best education and care. Unfortunately, his fate is tumultuous, and in the end, he dies while trying to save the male protagonist. This leaves him separated from his beloved Mu Xiao Wan in the realms of the living and the dead, resulting in a tragic ending.
Gu Lin Na --- Su Xiao Tong
During Chu Yi Han's undercover mission, she and him cross paths and develop mutual feelings for each other. In the end, they join forces and thwart the conspiracy of the mastermind behind the scenes, allowing them to face each other with their true identities.
Tai Yong Zhong --- Du Yuan
Tai Yong Zhong is a tough and decisive detective, as well as a team leader of an anti-corruption task force with a strong sense of justice. He delves deep into the clues left by criminals and, through clever tactics and intelligence, successfully solves a series of cases, upholding social justice and order. Tai Yong Zhong not only faces the cunning and cruelty of the criminals but also deals with pressure and skepticism from superiors. With unwavering belief and excellent leadership, he guides his team to overcome challenges and ultimately accomplishes their mission successfully.
Gu Mu Lan --- Zhang Zhi Jian
Gu Mu Lan was once a fearless and courageous wolf king, but during a crackdown 14 years ago, he suffered a severe injury, possibly resulting in brain damage that left him unable to live a normal life. He is skilled in strategy and adept at exploiting others' weaknesses, resorting to any means necessary to achieve his goals. In the end, Gu Mu Lan is captured and brought to justice by the police, facing the consequences of his actions.
Lin Ke --- Liu Wei Wei
Lin Ke was the first investigator sent by the police to infiltrate the criminal organization led by Gu Mu Lan. She is also the mother that Chu Yi Han yearns for day and night. In order to fulfill her duty to her country and uphold justice, she had to painfully sacrifice her personal feelings for her children. After the "Northwest Wolf" gang suffered a heavy blow, she disappeared along with Gu Mu Lan and Lao Qiang, the two antagonists. As a result, her martial brother Cheng Fan took on the responsibility of raising Chu Yi Han. However, five years later, Cheng Fan receives news about Lin Ke. This indicates that remnants of the "Northwest Wolf" criminal gang still exist.
