He was sent to Earth by The Collective as a protector of the humans. Then he found his Holy Mission. The bodies will be piled high before he's finished, but he's certain mankind will be grateful for being saved.
She was sent by The Collective to stop him. She must find a way to do that while hiding her alien nature.
She seeks help from the most unlikely sources, a former felon, one of the few humans who know about her kind.
Together, they must stop the madman. And soon. Before The Collective decides mankind isn't worth saving.