Aliens. Assassins. And the Apocalypse. They killed his mentor. They tried to kill him. And now, they are trying to kill her. Tortured by his past and uncertain of his future, the Assassin Core's most promising apprentice, Aero, vows revenge on the time-shifting Anarchists, but soon finds himself caught in a web of lies, deceit and espionage. The Central District is under attack from above...