Lu Duo, a young catcher in Dali Temple, was betrayed by his fiancée. After giving up his life, he relied on a "poisonous plan" to get revenge. His ingenuity was appreciated by the new Shaoqing Wang Zhaoyue. Since then, Lu Duo has become Wang Zhaoyue's "think tank", using roundabout strategies to punish corrupt officials and deter villains, without violating the law and letting the villains reap the consequences. The two work together to investigate cases, maintain order in the imperial city, use wisdom and courage to solve various problems, and interpret a legend of upright officials who punish evil and promote good.
