When the mysterious rose fragrance quietly fills the dark corners of the city, a hidden conspiracy slowly begins. Shen Lanqing, a 28-year-old private detective, has neat short hair and sharp eyes like an eagle. She always wears a simple black trench coat and walks through the streets and alleys, dedicated to exploring the truth about her parents' unsolved cases many years ago.
On the road of investigation, Shen Lanqing encountered many difficulties. Murong Wan, the owner of a mysterious flower shop, sent roses with special markings. What seemed like a kind gesture made her fall into a deeper mystery. Du Sanniang, the widow of the gang boss, regarded her as a thorn in her side and sent people to attack in an attempt to prevent her from continuing the investigation. Shen Lanqing is like a walker walking hard in a misty forest, every step is full of danger.
However, the twist of fate always comes unexpectedly. Zhou Baiyu, a cynical rich man, was moved by Shen Lanqing's justice and became her sponsor and right-hand man in investigating the case. Although police chief Liang Qiming was dissatisfied with her private investigation of the case, he also appreciated her ability and occasionally secretly extended a helping hand. These unexpected help allowed Shen Lanqing to see a glimmer of light in the darkness.
As the investigation deepened, Shen Lanqing found that he had fallen into a huge whirlpool of conspiracy, behind which lay a fierce game between multiple forces. Not only does she have to face threats to her life, she also has to make difficult choices in complex interpersonal relationships. When the dawn of truth gradually illuminates the darkness, and when justice and personal grudges collide fiercely, how should Shen Lanqing stick to the justice in her heart? Should we risk everything for personal hatred, or should we let go of our obsessions and protect greater fairness and justice?