Coppelia is a street thief, a trickster, a low-level con artist. But she has something other thieves don't... tiny puppet-like companions: some made of wood, some of metal. They don't entirely trust her, and she doesn't entirely understand them, but their partnership mostly works. After a surprising discovery shakes their world to the core, Coppelia and her friends must re-examine everything they thought they knew about their world, while attempting to save their city from a seemingly impossible new threat.