Kim Seokjin (20) had a difficult childhood because of his special deviation. Seokjin was seen as a 'curse' by God and was locked up in a laboratory where Kim Namjoon and his crew (the ACA) examined his special powers: he could see souls and on top of that, he is partially sighted. Since Seokjin was born, he never had the chance to meet his parents; his dad is unfortunately still unknown and his mother is hospitalized in an asylum. After years passed, Seokjin developed a certain skill where the ACA benefits from; he could transfer himself between the human realm and the soul realm. The ACA wants to use Seokjin's forces to bring both of the realms together, which has many dangerous consequences for both of the realms. Seokjin differs against ACA's actions and decides to run away. During his escape, he meets someone by accident who could give him a quick hideout but turns out, he develops strong and unexplainable feelings for this person and that person is no other than Kim Taehyung (22).