A story that follows a detective in the major crimes division of Nanxing City Police Department. Together with a woman who has super memory, he upholds the law one case at a time in solving murders, burglaries and bringing down a narcotics manufacturing facility.
Jing Chu is a young and capable detective. Due to his repeated merits from cracking big cases, he is promoted to the position of major crimes division vice captain at Nanxing city and starts to work alongside his new team. Because of a murder case, he meets Yang Mianmian, a young woman who possesses photographic memory. He soon realizes that Mianmian seems to have a deep connections to his father’s mysterious death many years ago.
Meanwhile, a famous blogger and a member of an idol girl group die consecutively. Their cause of death are identified to be due to a medical substance. As the major crimes division launch their investigation, they uncover a dangerous conspiracy that could threaten their own lives.