Luhan, a werewolf has been foreordain to search for sapphire jewel with a unicorn symbol on it to change his own life. In his life, his family has been killed by a group of vampire and this will make him become more constancy to search for it. Unfortunately, he have to find it in human world and he was followed by Xiumin, the vampire which is given task to stop Luhan from find that sapphire jewel.

In human world, Xiumin had an opportunity to strike strongly on Luhan's head. Luhan have lost memory on what is he doing in human world. Taeri, an ordinary human girl has 'found' Luhan on a street behind her work place. She quickly help Luhan, even she didn't care who Luhan is. Taeri has a bestfriend named Keyra and Kai who is always support on what she did.

Will Luhan remember back on what is he doing in human world ? Or will Xiumin stop Luhan from find that sapphire jewel ?