Min-ho is a "ghost"—a student with elite technical skill but zero original vision. In a world of art geniuses, he is invisible. Everything changes when he finds a discarded leather sketchbook in a rain-soaked alley. The drawings inside are hyper-realistic, visceral, and... breathing. But every masterpiece requires a sacrifice. As Min-ho traces the lines, the "Echo" begins to manifest in reality. To reach the top, how much of his humanity is he willing to erase?