Zara Stirling, Prime Minister's daughter, took a five-year hidden mission to "preserve loyal officials", living as a doormat in the General's Manor. Her husband favors concubine; her daughter sides with outsiders. Mother-in-law is harsh. Five-year deadline arrives, Zara reveals her true identity. Ex-husband stunned: neglected wife is top political resource? Zara smirks: You thought I came to cling to your Graham Clan? I was the life-saving amulet your father begged for!