Ever wonder why idols have such pale skin? How they seem to never age?

It's because they're not human.

They're vampires.

In SM Entertainment, auditions are held to determine who will be the next big star. Who will be chosen to train under the guidance of SM Entertainment and have their dreams come true. Little do these trainees know, that when the date of their debut is set, they must undergo a transformation from human to vampire before they are officially revealed to the public as idols. Their transformation is necessary to ensure their idols survive the harsh life of being a celebrity. Vampires are, after all more efficient and durable as workers.

Sehun is a young man with a dream to be a famous performer loved by millions. He passes the SM audition with flying colors, however like the rest of the new trainees he is oblivious to the fact that when a debut date is set for him, he will be forced to transform into a vampire. And he doesn't know about the trouble (in the form of a handsome young man with bright doe eyes and an innocent looking face) that awaits him in his new trainee life...