"The Aenar" is the ninetieth episode of Star Trek: Enterprise, the fourteenth episode of the fourth season. "The Aenar" was the third instalment of a three-part story which concluded the events of episodes "Babel One" and "United".
Set in the 22nd century, the series follows the adventures of the first Starfleet starship Enterprise, registration NX-01. In this episode, Captain Archer and Commander Shran collaborate to stop the unknown drones from causing further havoc. They return to Andoria seeking the help of the Aenar, an offshoot race of the Andorians, one of whom has been taken to pilot the drone Romulan ship.
Senator Vrax, fresh from the Romulan Senate, is disappointed that Admiral Valadore and scientist Nijil's drone program has failed to provoke a rift between Human, Andorian and Tellarite races as they had hoped — in fact the opposite has happened - political discord throughout the Alpha and Beta Quadrants has declined. Now that a second drone is ready, Valadore suggests a mission against Enterprise in order to impress the Senate. Nijil argues that the pilot requires time to recover from his previous exertions, but Valadore insists and prioritises the mission.
On Enterprise, analysis of the data gathered from inside the drone reveals that the ship is being piloted telepathically by an Andorian. Commander Shran explains that the data indicates the pilot is probably an Aenar, a white-skinned and blind Andorian sub-race, but this seems unlikely since the Aenar are few in number, are reclusive pacifists, and inhabit the isolated extreme northern polar region of their moon. Shran and Captain Archer then beam down to contact the Aenar, and their spokesperson, Lissan, initially declines to assist as they do not want to get involved in a war. However, a young female named Jhamel decides to help, since doing so may help locate Gareb, her missing brother.
Meanwhile, Doctor Phlox, Commander T'Pol, and Commander Tucker work in Sickbay on their own "telepresence" unit to help counter the drone ship. T'Pol volunteers to test it, and a concerned Tucker finds it increasingly difficult to balance his duties and emotions. Jhamel then tests the unit, with better results. Later, when the drone ships reappear and attack, she is able to contact the drone pilot, and it is indeed her long-lost brother, who was tricked into working with the Romulans. Learning the deception of his "helpers", he turns the drones on each other and both are soon destroyed, and Valadore angrily kills him as retribution for his failure. With the threat resolved, the Andorians depart Enterprise, but Tucker requests to leave the ship as well.