As long as you did it, there would be traces
This drama centers around solving arson-related cases. While one overarching mystery runs through the entire series, each episode also features individual case stories, each with its own intriguing plot and emotional depth.
Xu Tongsheng lost both of his parents in a fire explosion. Although the case was officially closed as an accident, he has always believed it was murder. Driven by this conviction, he becomes a fire investigator in hopes of uncovering the truth about what really happened that day.
After the loss of his parents, Xu was sent to an orphanage, where he met Jin Chun. Her mother runs the orphanage, and the two essentially grew up together like siblings. Jin Chun later becomes a coroner for the police.
At the start of the first case, Xu Tongsheng crosses paths with police officer Shen Ye. To his shock, Shen Ye turns out to be He Xi—his childhood friend who he believed had perished in the same fire that killed his parents.
As a result of the increasing number of fire-related incidents, a joint task force is created between the fire investigation unit and the police department. Xu Tongsheng, Jin Chun, and Shen Ye (He Xi) become an unshakable trio—an “iron triangle”—working together to solve cases and uncover the hidden truth behind the past.
What makes this drama particularly special to me, beyond the well-written and well-acted case stories, is the absence of romance between the three leads. Instead, it focuses on pure camaraderie and genuine friendship—something that is rarely seen in Chinese dramas and therefore feels especially refreshing.
Rather than romantic entanglements, the story puts the spotlight on parent-child relationships, such as the complex relationship between Jin Chun and her mother or between Shen Ye (He Xi) and his “father.”
That said, there are still a few subtle moments where one could find themselves shipping Xu Tongsheng and Shen Ye (He Xi)—but it's never the main focus. The emotional tension and trust between them are portrayed in a way that leaves space for interpretation, which adds even more depth to their connection.
Xu Tongsheng lost both of his parents in a fire explosion. Although the case was officially closed as an accident, he has always believed it was murder. Driven by this conviction, he becomes a fire investigator in hopes of uncovering the truth about what really happened that day.
After the loss of his parents, Xu was sent to an orphanage, where he met Jin Chun. Her mother runs the orphanage, and the two essentially grew up together like siblings. Jin Chun later becomes a coroner for the police.
At the start of the first case, Xu Tongsheng crosses paths with police officer Shen Ye. To his shock, Shen Ye turns out to be He Xi—his childhood friend who he believed had perished in the same fire that killed his parents.
As a result of the increasing number of fire-related incidents, a joint task force is created between the fire investigation unit and the police department. Xu Tongsheng, Jin Chun, and Shen Ye (He Xi) become an unshakable trio—an “iron triangle”—working together to solve cases and uncover the hidden truth behind the past.
What makes this drama particularly special to me, beyond the well-written and well-acted case stories, is the absence of romance between the three leads. Instead, it focuses on pure camaraderie and genuine friendship—something that is rarely seen in Chinese dramas and therefore feels especially refreshing.
Rather than romantic entanglements, the story puts the spotlight on parent-child relationships, such as the complex relationship between Jin Chun and her mother or between Shen Ye (He Xi) and his “father.”
That said, there are still a few subtle moments where one could find themselves shipping Xu Tongsheng and Shen Ye (He Xi)—but it's never the main focus. The emotional tension and trust between them are portrayed in a way that leaves space for interpretation, which adds even more depth to their connection.
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