The story begins on a cold autumn day. Su Ji'an, a college graduate, stayed as an intern at a law firm in the city as he wished. Lu Yuan encountered a mysterious case shortly after reporting to the Criminal Investigation Brigade.
In the process of searching for the truth, the relationship between Lu Yuan and Su Ji'an also experienced various tests, and gradually developed from initial partners to a couple who are attached to each other.
Every time a mystery is solved, new questions arise.
They embarked on an adventure about love, friendship and truth in this foggy city.
Purpose: Through the process of criminal police and lawyers working together to solve the case, the love between the two people that quietly arises in the tense and exciting working environment is delicately outlined.