Enemy: Starfleet Star Trek: New Voyages : Season 1 Episode 6

Attacked while exploring a new sector of space, Captain James T. Kirk and his crew find themselves thrust in the middle of a war. The USS Eagle, lost eight years before, is now in the clutches of a woman who bends starships and their captains to her will and has been reverse engineered into a fleet that is bent on domination and genocide. The Enterprise may be the only ship able to stop the Peshan homeworld from falling to Alersa and her enemy starfleet.