The story takes place in the city, similar to Italy, known as Belmont, with technology levels resembling the levels of the late nineteenth century. In this city there are mechanical dolls with a person sized, known as "automata" that serve residents of the city. The main character, Romeo, is a taxi driver who originally participated in the organization known as the "Olma Ross". Find a machine gun in the form of a young woman who seems to be amnesia. She calls her Anna, they begin to live together. However, after a while, Alma Ross begins to catch up with Romeo, and an organization consisting of machines appears; Therefore, Romeo must fight to protect his current life.