The alien stranglehold on Earth has been broken, and the resistance has triumphed. Victory is sweet until alien leader Diana uses her powers to escape from her captors. The alarm is raised, and the familiar beat of fear rises in the heart of the resistance. Diana must be stopped.

Resistance member Donovan sets off in the alien Mother Ship in pursuit of the fleeing Diana, praying that he will be able to capture or destroy her before she can reach alien forces and trigger another invasion of Earth. During Donovan's absence, the victory continues to unravel. And so, the battle once won, must start again...