The ancient country of Shu-Chen enjoyed peace thanks to Moi Tin, a sacred relic of the god, but due to the prophecy of the priestess Chen, King Dautien dies in the rebellion of his son Feng Wu-yen, and the country falls into chaos. Pung Ouyen establishes a new country, Ta Tinh, and thanks to the sacrifice of the priestess Nguyen Thien, Dautien's second son Teng survives and rebuilds Shu Chen, but the war between the two countries continues. Hundreds of years later, Hye-in and Sang-hyeon in modern Seoul live ordinary lives without knowing their past, but come face to face with their past selves through Moi-tin. They realize that they are reincarnations of the ancient Nguyen Thi and Teng, and Young Hoon Lee, the reincarnation of Pung Ouyen, tracks them down. Hye-in and Sang-hyeon fight to face the truth of the legend and their destiny, but as God's Time approaches, a new war begins and they are faced with a choice.