Maehwa Baek had regarded the Butterflies as courageous figures he had only seen on TV. But when a calamitous event occurs, he is confronted with the scientists accountable for their origin. Intrigued, he capitalizes on the opportunity to examine their domain, which pushes him to deal with unfading doubts regarding his identity, such as why his own blood sets off a loss of authority. Furthermore, he must reveal the veracity respecting the 13-year emptiness in his recollection.