Exiled to the frontier, Shen Yanqiu chooses Lu Chenchuan, a disgraced military officer with a lame leg, as her partner. Together, they take over a barren, saline-alkali hillside. She excels at farming and bookkeeping, while he is well-versed in border defense and military affairs. Joining forces, they expose a wrongful case involving stolen military grain, restore the wasteland, and uncover the Fengwen Trading House, which is smuggling goods through military households. As they reclaim the land and grow crops to fulfill their military farming quota, they also investigate an old case, uncover royal corruption and secrets, and eventually head to the capital with evidence to uncover the truth about their own origins.