It's been almost one hundred million years since an asteroid impact devastated Earth, leading to the extinction of biological humans. Their digital offspring survived and slowly colonized the galaxy, printing out bodies to build and maintain the network of computers that host their digital world. Perrin is a biological boy from Earth, learning how to maintain the eco-walls separating the ecosystems that digital humans have recreated on the planet. Cerelys is a PIP, a digital human girl with a hunger for the outside. When she introduces him to the dangerous world of the illegal story trade, the spark between them threatens to ignite the most explosive chain of events in a hundred million years.