Qin Qiyou, a rich second-generation heiress who's never had to lift a finger, transmigrates into the body of a madwoman who's pregnant and has a son. She knows nothing about cooking or household chores, but she's an expert at making and spending money. Relying on her graduate-level expertise from the Academy of Plant Research, Qin Qiyou leads the villagers to prosperity.
When famine and war arrive, she lets them run their course for a while, then brings out the high-yield crops from her carefree farm to save the villagers. She keeps saving people until she ends up saving the whole country.