When Lin Yungui, a modern cultural relic restorer, was restoring a mysterious jade jue, he accidentally traveled to the prosperous Chang'an and became Shen Yungui, a young lady from the Shen family who was involved in an unjust case of collaborating with the enemy.
When he woke up, his father was in jail, his family was wronged, and he was almost killed. In order to survive and to find out the truth about the Shen family, she had to join forces with the cold-faced Jin Wang Xiao Zhi, from the cold lantern of the Ministry of Justice to the old fire of Hanzhang Palace, from half a jade jewel to the orphan of the prince, step by step to uncover the secrets of the palace that were buried by the powerful twenty years ago.
Xiao Zhi was originally the leader of the Imperial City Division who was feared by everyone. He was cold, solemn and aloof, and did not trust people's hearts. But while investigating the case side by side with Lin Yungui, he saw her intelligence, tenacity and unusual origins. And Lin Yungui also gradually found care, home and inseparable love in this strange ancient Chang'an.
When the truth came to light, Qing Yujue once again opened the door to return to modern times. She finally had to make a choice between her original life and her lover in Chang'an.
A time travel, an old case, a deep feeling across time and space.
The clouds return to Chang'an, and they also return to the king's heart.
