The angelic boy April, who was transferred to St. Gabriel Theological Seminary, had a beauty that seemed to escape from the painting. During his winter vacation, he passes Tristan, a senior student with a dangerous charm in an abandoned house at the East Gate, and kills him with a silver knife. It was that Sahan Rezak who appeared before him who was guilty and worried. A secret spiral story that depicts the trajectory of a beautiful spiral drawn by the souls of silver and black, leading to the work "Silver" being delivered. A story of soul and salvation that fuses the worlds of "silver" and "black" over time.