The young detective Di Renjie (played by Xiao Ai) with high IQ but low EQ first met Bai Yuanfang (played by Bai Ke), a rich second-generation who had no reasoning ability but wanted to be a detective, and Fang Qihe (played by Zhang Benyu), his scheming enemy, at a detective competition. Bai Yuanfang wanted to open a private detective shop with Di Renjie, but Di Renjie reluctantly agreed due to financial pressure. With the addition of Bai Yuanfang's sister Bai Jie (played by Zheng He Huizi), the three began their hard work of solving cases as the "Di Bai" team. At the same time, they were unfortunately involved in the power struggle between Wu Zetian and the hostile group. The truth is about to be revealed, and it's just one step away!