In China at the beginning of the 20th century, people's livelihood was in decline.As a declining aristocrat, Jin Yurong aspires to become a doctor who saves people and helps more people with her own hands.She met Zhao Zhengnan, the son of a large family who also cared about the common people.The two met, got to know each other, and then fell in love.They also work hard to explore ways to make the world a better place.After all kinds of hardships, Yu Rong finally became the doctor who saved Xuan Hu, and Zhao Zhengnan also became a soldier with progressive ideas and guarding the side.But the torrent of time forced them to separate, and the two eventually parted ways.Just when Yu Rong felt disillusioned in life and fell into a trough, communist beliefs shone into her world. Yu Rong gradually became reborn and devoted herself to the revolutionary cause, becoming an invisible guardian of the revolution.After going through all kinds of dangers, the lovers finally got married.Inspired by Yu Rong, Zhao Zhengnan finally became a part of the red wave, joining hands to fight against Japan and embrace a new China.