Yao Xuechen (played by Lam Pou-yee) has an excellent memory. He once learned memory techniques from a mysterious woman. In addition, he went to the United States to study criminal psychology, and then became an extraordinary "mind-reading detective". The so-called "mind-reading" is to be able to see into a person's true inner thoughts from his words and deeds. Xuechen has repeatedly solved suspicious cases with this ability. The police station where Xuechen works also has complicated relationships: the newcomer He Lixian (played by Bosco Wong), who has a lot of complaints about Xuechen's "mind-reading" ability, actually secretly dates his sister Belle (played by Aimee Chan); another divorced colleague Ye Zhanting (played by Kristal Tin) has a good impression of Xuechen. But deep in Xuechen's heart, there is an unknown psychological shadow-he witnessed his father die in an accident when he was young, and then grew up in an incomplete family with his mother remarrying. Unexpectedly, one day Xuechen's "dead" father unexpectedly appeared...