In a world of fantasy, Prince Sunghoon is known as the vampire prince. Him and his family are the most powerful ones in the kingdom.

You, on the other hand is the royalty princess. Your parents are against the royalty vampire families, which means you guys never met before.

Today is ballroom day in your palace, but you guys have a rule, that is everyone who attending the ballroom dance, must wearing a mask. Who knows? Sunghoon will also come, Vampire prince. you also didn't know.