Seoul recently opened up a new military department and Choi Jongho, a beginner and determined to be an excellent soldier in his unit, embarks on dangerous missions to catch criminals that threaten to destroy the lives of citizens. However, he stumbles across facts that were hiding from him in places he never thought was possible, including pieces of his own past that he was completely unaware of. 

100 years after the loss of Dr. Lee Hongbin and his cyborg girlfriend Youngji, his cyborg became a vessel of their memory so that they would be remembered of their final act of love. Having been asleep all that time, they haven't witnessed the changes the century had: Humans are nearly extinct and military cyborgs are being replaced instead. One small boy is the last human on Earth and his parents find the lab the fiv

Six young men and one girl are trapped within the attic of a frenzied young woman who only wants to be loved by those who will only devote themselves to her. As the girl unwillingly watches the six men become a part of a gruesome experiment, she learns what it means to be with others, and about her own strength.

With no friends, no family, and no girlfriend, Lee Hongbin works as a cyborg creator to make friends of his own. But what happens when he discovers his forgotten project: A female cyborg named Youngji?