Liu Shao initially leads a carefree life of a wealthy heiress, but accidentally gets embroiled in a battle between the immortals and demons, thus unraveling the past and present romantic entanglement between her and Lu Li, a mysterious cloaked immortal.

On her wedding day, Chu Jiuling (daughter of former crown prince) discovers that the person who killed her father is her uncle (the current Emperor). Just as she decides to seek revenge, she was almost killed by her husband, an imperial guard. Fortunately, she was saved by physician Zhang Qingshan. Chu Jiuling returns with a new identity - Jun Zhenzhen and assists the Fang family in unraveling the schemes of the Emperor, saving them from becoming victims of a political scheme. With her outstanding medical skills and wit, she then changed her name to Jun Jiuling, and heads to the capital to become a physician. After managing to integrate with royalty, she sets out to unravel corruptions behind the political court and win the hearts of people.

Fu Rong is born into a family of goldsmiths, and is intelligent and hardworking. Due to her elder sister's unfortunate marriage, she vows to control her own destiny and flees from her own wedding. At the capital, she meets the arrogant and proud Xu Jin (Prince of Xiao) at a festival. Their lives became entangled together as they join hands to to uncover corruption and crimes. They managed to investigate the truth behind the gold murder case and discover the real culprit who poisoned Consort Duan. With her wide knowledge, kindness and independence, Fu Rong wins Xu Jin's admiration; while Xu Jin also saves Fu Rong from danger. When Fu Rong's master commits suicide, Xu Jin aids Fu Rong as she finds the mastermind. They get caught in a rebellious plot brewing in the palace, and finally resolve it in the end. After undergoing a series of life changes, Fu Rong and Xu Jin retire to their homeland and lives a peaceful and happy life together.

It has been foretold over three thousand years ago that the apocalypse is impending and that one Taoist grandmaster will emerge to save the world. To give the people a fighting chance, the immortals have gathered a team of gifted individuals in search for the sacred shield.