Star Trek: New Voyages (2004)

S1E7 Enemy: Starfleet

Title: Adversary: Starfleet Plot: The USS Enterprise finds itself in a fierce confrontation with a forgotten Federation vessel, the USS Eagle, now led by the captivatingly sinister Alersa. As the crew battles against this unexpected foe, they must uncover the reasons behind the Eagle's transformation from ally to adversary, all while navigating the complexities of Alersa's charm and cunning. Tensions rise as the Enterprise crew strives to defend their ship and unravel the mystery of their former comrades turned enemies.