Donghae's a vampire. He grew fond of a human named Hyukjae. When Hyukjae was beaten badly nearly reaching the edge of life.. Hae bit him. Then their story starts. But Hae has a mission. A very dangerous one.

Officer Lee Donghae is the son of Korea's Defense General, Lee Junghae. Donghae is assigned as the head of Team Mask, Korea's Defense Team to Capture The Mask, Korea's notorious Drug Dealer. Donghae's team is about to capture the Mysterious Masked Guy, but it turned out the wrong way.

Donghae is Hyukjae's greatest fanboy.

The father's of Donghae and Hyukjae are slayers. On the night of the apocalypse, they were injected with sleeping drugs. The next day, they woke up and only the two of them were left. How can the frenemies survive this?

Donghae is a socially awkward person. A kind of person who barely goes out of his apartment. There, he secretly peeks at his neighbor ;Yesung everytime, copying and following his every move. One day, Yesung's half brother, Hyukjae came back from abroad. On the day of his arrival, he saw Donghae peeking on his window.He gestured that he'll be watching him. He eyed the window, thinking that Donghae was a female stalker. Then he found out Donghae was a guy. It