Yun Qingyu actively cuts off the illusory engagement, single-mindedly washing away the many years of unjust grievances of her clan. She carries a pair of clever children to search everywhere for clues, and along the way meets a mysterious person of noble character who secretly helps out repeatedly. Relying on her unique set of skills and extraordinary resilience, she layer by layer uncovers all the inside details of when her clan suffered calamity back then. Treacherous people in the court continuously set up heavy obstacles, and the eldest son also unexpectedly contracts a hidden illness. To find out the truth and protect her children, she unites a crowd of upright fellow practitioners, collects complete evidence to submit to the official government, and by law retrieves innocence and justice for her clan.