In a world where humans and androids coexist in a formal master-servant relationship, Marius works as an android mechanic. During a house call to collect obsolete units, he encounters Misha, an antique android of unusual design who has lost all memory of its past. Unlike any other android, Misha sings, actively seeks out a new master, and at times outright refuses to follow human orders. Intrigued by this deviation from standard android behavior, Marius takes an interest in Misha, though he questions whether his fascination is simply professional curiosity or something more personal. A slow-building romance begins to develop between the human mechanic and the unique android that transcends the boundary between species.

The setting blends science fiction with a retro, almost Victorian-inspired aesthetic reminiscent of the Industrial Revolution, featuring intricate designs that evoke porcelain dolls and dusty shelves. The narrative deepens as Marius uncovers unsettling truths about his late father, a talented engineer whose recent death may not have been accidental. Evidence suggests the father was murdered, drawing Marius and Misha into a web of conspiracies involving powerful interests. Misha itself appears to be no ordinary antique but rather an exceptional creation possibly linked to Marius's father, one that other parties are determined to acquire. The story escalates with kidnappings, violent confrontations, and the emergence of a growing rebellion involving androids, all while Misha struggles to recover its lost memories and Marius confronts the mysterious circumstances surrounding his father's demise. Alongside the central mystery, the manga explores questions of consciousness, humanity, and the capacity for love in beings not designed to feel it. The series is ongoing with two volumes currently available.