Jung Chanwoo is born in The Royal Blood House which produce only the true blood and the most respected vampire. Each of vampire that was born into the royal family will have a mate that is born at The Cross Blood House that only produce girl as the mate for the royal family. But what happen this time, the first in their history a baby boy was born into the house of Cross Blood. Creating a havoc around the empire that was ruled by none other than the great Jung Hyunsuk, the father of Chanwoo.