Modern agricultural research institute graduate Chu Qinghe is backstabbed by colleague Su Lianyue and accidentally time-travels, reduced to an adopted farm girl in Yuanhe Village, forced to marry the folk 'foolish husband' Lu Jingyuan to bring good luck. Lu Jingyuan seems foolish, but is actually the eldest grandson of Prince Jing, who was framed by the Empress and fell among the people. Using her modern agricultural knowledge, Chu Qinghe cultivates high-yield crop seeds and resolves local famines. Arch-enemy Su Lianyue also time-travels over, steals the imperial token to impersonate a princess, and colludes with the crown prince to frame and harm the two repeatedly. While farming to save the world, Chu Qinghe uncovers her identity, turning out to be the long-lost legitimate daughter of the Emperor and Noble Consort Ning. The couple joins hands to shatter court conspiracies and vindicate the old case of Prince Jing's Mansion.