During the Zhenguan period, the widower Shen Qingci and Tang Lin teamed up to solve the case. From corpses floating in the countryside, to murders during spring plowing, to strange cases in county schools, to the mystery of Jinyun Pavilion in the capital, we go deep into each layer to uncover the old case of Dewey's rebellion involving the family and the imperial power, and clear the wrong for Shen Qingci's father. Use corpses to collect evidence, use the law to resolve cases, and uphold justice in the prosperous world.