The emperor's grandson Li Ni, guards the border and is forced to take on the responsibility of quelling the rebellion. Although Li Ni is the grandson of the emperor, he was never loved by his father. He hides his identity and is content with being a carefree frontline border general who has no intention of fighting for power. During military campaigns against the rebels, he encounters the ambitious Cui Lin, who is the only daughter of General Cui Yi, the commander of the Cui family army. Cui Lin concealed her true identity and disguised herself as Lieutenant He, fighting alongside the army. They cross paths with each other many times on the battlefields. One is scheming and witty, the other is guileful and forthright. In their competitiveness with each other, from time to time they calculate and predict each other's plan and movement to fight as the winner which leads them down the path of falling in love.
The queen of the human tribe gave birth to twin girls. Respected by the entire tribe, the older sister Qing Kui, who is gentle and kind, is betrothed to the heavenly prince. The younger sister, Ye Tan, smart and cunning, shunned by her own people, is betrothed to the demon prince. Due to a mix-up, the two sisters are married off to the wrong husbands. It paves the way for two beautiful romances and also ignites a conspiracy that shakes the four realms.
Inside the Beijing hutongs where professionals who engage in art conservation and restoration live is a story between a museum conservator and a translator. Shao Xue, Zheng Sunian, and Zhang Qi are children of museum conservators. They share many experiences growing up having lived through the SARS epidemic, the death of their loved ones, and the old city being demolished to forge a deep friendship with each other. As they grow up, everyone starts to choose different paths. Influenced by Zheng Sunian's mother, Shao Xue is unwilling to give up the infinite possibilities of the future for the sake of love and leaves home to search for greener pastures. Zheng Sunian inherits the legacy left by his mother to become a conservator-restorer and finds meaning through the preservation of cultural artifacts. Zhang Qi earns the opportunity to study abroad due to his mathematical skills. Before leaving, he decides to bury his feelings for Shao Xue.