Within the enigmatic Shadows House, Emilico serves as a Living Doll, tasked with maintaining the pristine cleanliness of the abode alongside embodying the persona of her master, Kate. Bound by a mysterious connection where Shadows and Dolls mirror each other, Emilico and Kate navigate this peculiar world where soot-stained residents are paired with their identical counterparts. Despite the unclear nature of their relationship, Kate and Emilico share a deep bond, with Kate confiding in her loyal Doll. As they grapple with the scrutiny of the mansion's overseers from above, the true purpose behind these intricate pairings remains shrouded in uncertainty.