Framed as the notorious Night Devil on his wedding day, top detective Xiao Beiming is accused of murder and treason, forcing him to flee. Three years later, he returns to the capital, earning the trust of his apprentice sister, Zhong Xueman. With a team of fearless allies, he unravels a series of mysterious cases, to expose the real Night Devil and restore order to Da Qi.

立志凭科举入仕、改写底层命运的孤女孟廷辉因意外结识微服私访的少年新帝英寡，二人联手铲除沙州官匪，英寡赏识其胆识智谋，暗中助力她赴京赶考。孟廷辉入京后遭科举舞弊构陷，凭智勇自证清白，被英寡破格任命为察闻院主事，清查虎啸帮、晚香阁等黑恶势力，逐步牵出血月会复国阴谋与朝堂权斗。二人从君臣知己渐生情愫，历经身世谜团、朝堂阻力与边境战乱，最终平定叛乱、整肃朝纲，携手共护江山万民。

Zhang Xiaoyu, a rookie in the corporate world, becomes the secretary of Lin Rui, a top sales director at a renowned cosmetics company. As Lin Rui faces a power struggle against her rival, Fang Jing, Zhang Xiaoyu gets entangled in office politics. Despite the challenges, she proves her talent, grows in her career, and finds love.