Lin Zhao, a top modern-day auditor, transmigrates into the body of an orphaned daughter of a convicted official, betrothed by the Empress Dowager to Prince Xiao Yehan of Zhenbei.
With her skill at keeping accounts, she gets a poor border town back on its feet: opening a trade market, running a tavern, building canals, and establishing schools, all while quietly making money and outsmarting corrupt officials.
Following a trail of corruption, she uncovers the old case of her family's massacre. Together with the cold-faced prince Xiao Yehan, she takes down the hidden powers at court, making money and clearing her family's name at the same time.
The early part focuses mainly on farming, making money, and building a career. Later, there will be some political intrigue. It's a sweet romance.