The conclusion of this three-part series reveals the story of how Commander Sarah Palmer became a Spartan-IV and leads directly into the exciting new mobile game from 343 Industries, Halo: Spartan Assault. Sarah Palmer and her new comrade Spartans are thrust into action when a violent insurgent group attempts to seize the UNSC flagship Infinity. Is their Spartan cunning a match for the insurgents' brilliant guerrilla tactics?