Nemesis is a Diabolic, a humanoid teenager created to protect a galactic senator's daughter. Raised side by side, Nemesis would give her life for Sidonia-- and take as many lives as necessary to keep Sidonia safe. When the power-mad Emperor learns Sidonia's father is participating in a rebellion, he summons her to the Galactic court to serve as a hostage. Nemesis must become Sidonia to save her. It's a nest of vipers-- and Nemesis finds within herself a humanity truer than what she encounters from most humans.