Divorce was a heavy topic to bring to the table. When there's no happiness left to share, and only a sorrow path to go through, how can one couple stand? Seonghwa has been overworked the last few weeks, awakening doubts in his wife, Sojin. However, what he didn't expect was the settlement coming from her.

The Emperor of Hwaegun is feared for one reason - he smiles while destroying anyone who crosses him. So when the court forces him to choose a spouse, he shocks the kingdom by summoning every eligible noble to the palace for one night. Wooyoung, the general's playful and dangerously curious son, promises to behave. Naturally, he doesn't. He sneaks to the forbidden lake... falls in... and is kissed breathless by a mermaid. The next morning, before the entire royal court, the Emperor smiles like he's been waiting for this moment and announces: "I choose Jung Wooyoung as my Empress." Now Wooyoung is stuck in a palace full of secrets, jealous nobles, and one cunning emperor who is terrifying to everyone - except when Wooyoung is involved. He doesn't know why the Emperor is obsessed with him. He doesn't know why there's a silver-blue scale in his palm. But he knows one thing: He should never have gone near that lake.