The wife of Gu Congxi, the minister of Zhongshu, was poisoned. Song Sizhi, a poor scholar who worked in Zhong'an Hall, became the number one suspect. After being arrested and imprisoned, Song Sizhi proved his innocence and joined forces with Ye Yuanqi, the young minister of Dali Temple, to solve the case, which led to a series of conspiracies. Song Sizhi and Gu Congxi have become friends since then and work together to defeat the enemy.
