Emperor Xiao Jinyun of Dachen and his Empress Xu Yu got married for the court's sake. She is the daughter of the powerful commander-in-chief but is unfavored by him. He doesn't defend her when his mother the Empress Dowager and his noble consort disrespect her. Thus, she does not enjoy the trappings of power and respect in the royal household.
Things change when for some magical reason, Jinyun and Xu Yu switch bodies. With this shared secret and to preserve their lives, they become inseparable, with him sleeping on her bed every day, something he has never done before. Living in her body, he finds out how she has suffered for his neglect of her in terms of being mistreated by his mother and concubines and being framed for things she has not done.
Having been trained in archery and martial arts, Xu Yu is able to help Jinyun with his imperial duties relating to the security and stability of his realm.
This is highly entertaining. The royal household intrigues and the development of the romance are reminiscent of such great Chinese dramas as The Sword and the Brocade and The Story of Minglan.
I'm looking forward to Season 3.