Rowan Sinclair receives a concubine on her wedding night. She throws the concubine into the pond, banishing the Heir. Mother-in-law and Old Madam pressure her with account book traps. She is the Grand General of the North's granddaughter and Young General of the Sinclair Army, on military order to infiltrate and find evidence of collusion. She audits accounts, overthrows concubines, thwarts raids. On the Autumn Hunt, she saves His Majesty from assassination with her spear.