In an experimental accident, modern scientist Lin Yan and the empress Feng Lin, who was facing an ascension in the world of immortality, time-traveled together at the same time and became Shen Yan and Su Qingyuan, a nominal couple in the Jing'an Marquis Mansion of the Dajing Dynasty. After the two woke up, under the same roof, they initially tested and guarded each other, and then had to start a limited cooperation in order to survive in the complex family environment. Lin Yan used scientific knowledge to solve problems in life and gradually emerged in ancient times; while Feng Lin adapted to the mortal body, he secretly explored whether there was a possibility of cultivating immortals in this world. Amid crises and challenges one after another, they gradually let go of their barriers, not only uncovering the secrets of their own time travel, but also discovering the huge mystery hidden behind this seemingly ordinary ancient dynasty.
