Lu Qianyu, who possesses the ability to see through lies, has always been troubled by this ability, unable to trust others. Later, she discovers that she can turn this ability into a money-making tool, helping people identify lies and solve their troubles, becoming a lie catcher. However, after meeting the genius composer Wen Zuhe, she never hears him tell a single lie and starts to doubt whether her ability has failed. Qianyu constantly looks for ways to get close to Zuhe to test her ability, but in the process, she discovers that Zuhe is not only the stranger she unexpectedly helped five years ago, but also a suspect in a girl’s disappearance and murder case. Due to the murder suspicion, Zuhe has been vilified, living in hiding for many years, without ever appearing in public. Encountering Qianyu, she becomes the only person who believes in him, and even helps him seek the truth. During this process, the two slowly grow closer, developing a remarkable friendship, and help each other resolve their inner struggles. Qianyu gradually begins to trust people, while Zuhe also starts to re-engage with normal life.
