Nano Miller has spent her entire life on Dog Island, a sanctuary for world's last surviving canines and the testing ground for their robotic replacements. Every year, Nano gets a new model. But when Dog Island's biggest celebrity supporter, movie star Marky Barky, arrives for his annual visit, Nano discovers something that shouldn't exist: a real puppy. Unable part with it, Nano now finds herself on the run. She knows that the puppy could destroy her family, her boyfriend, and even the Island itself. Yet her harrowing fight for their survival sparks a belief that it might just save them.