After being betrayed by Blake on the train, her younger brother Y/N was taken prisoner by Atlas. Experimented on by a mad doctor, he becomes the first ever human/Faunus to survive the Aura/Dust Integration Experiment, which earns him the revolutionary moniker of the Obsidian Spark. Two years later, he reunites with Blake at the shipping dock and their destinies become intertwined. What will happen when he finds himself captured at Beacon after another betrayal and how will he escape?!