In the modern city of the 21st century, female detective He Yuanyu is known for her keen insight and indomitable spirit. One day, while chasing a cunning fugitive suspect, she accidentally broke into an antique antique store. The store was dimly lit. The antiques were scattered in an orderly manner, as if each piece carried a heavy history. As she shuttled between these ancient objects, a strange light suddenly enveloped her. Then, time and space seemed to be distorted, and He Yuanyu accidentally traveled to the Qing Dynasty by accident.
In this strange era, He Yuanyu transformed into Dayu'er, the princess of the Horqin tribe in Mongolia, possessing peerless beauty and extraordinary wisdom. Here, she reunited with her childhood sweetheart, brother Chengyou, who had grown up together. The relationship between the two was pure and deep. Thick, like the purest blue sky and white clouds on the grassland, however, fate does not seem to intend to let this emotion continue peacefully. Because of an ancient fable - "He who gets the lucky star can get the world", Dayu'er was accidentally involved in the struggle for imperial power.
Huang Taiji, a talented and ambitious emperor, believed deeply in fables and vowed to get Dayu'er, the so-called "lucky star", to stabilize his country. With his extraordinary charm and power, he launched a fierce pursuit of Dayu'er, while Chengyou silently guarded Dayu'er and did not want her to be involved in this whirlpool of power. The emotional entanglement of the three people, like the intricate palace struggle, was full of twists and turns...
