Modern female boxing champion Wen Ruanruan suffers severe injuries in a righteous act to help others, and unexpectedly time-travels to ancient times. At that moment, General Jin Liancheng is suffering from severe poison and needs a wedding to ward off bad luck and prolong his life; when his original fiancée backs out at the last minute, Wen Ruanruan steps forward to take her place in the marriage. Relying on her modern mindset and boxing skills, she tears apart vicious servants, confronts the insidious cousin Xing Buzheng and the ambitious Sheng Liru, cleverly breaks through the black gold mystery, and clears her name of the false accusation of murdering the Western Region princess. She encourages trapped women to awaken and empower themselves, joins hands with Jin Liancheng to develop firearms to resist foreign enemies, and shatters the villains' rebellion plot.