Cast

Fan ChengCheng, the castle's head of guards. A powerful, trained guard and well-known for his strength, intelligence and authority. He is obligated to not fall in love in order to do his duties right, although, that was his decision. The castle allowed him to have a lover but he refused saying that it would just get in his way.

Wen Siyun, a spy no one ever saw, but was called Agent J. They have always listened to the rumors, sometimes even see her but they were never able to see her face. She captured everyone's attention. Women were all curious as the men were attracted to her hidden self.

Once they meet, what would they do?