Plot summary
A Bajoran is shown recording a message.
Onboard USS Voyager, former Maquis member Ensign Tabor (Jad Mager) is found comatose. The Doctor finds evidence Tabor was attacked; Captain Janeway assigns Tuvok to investigate.
Soon there are five comatose crewmen in Sickbay, with the same injuries, all former Maquis. Tuvok notes that the assailant must have access to security protocols to avoid detection. Tuvok, Tom Paris and Kim capture a negative image of Tabor's assailant.
While investigating, Chakotay is suddenly attacked and rendered unconscious by Tuvok. Tuvok has no memory of this and continues his investigation. All the victims recover but have no memory of being attacked. Tuvok meditates and has flashbacks of attacking the former Maquis members, and has a vision of the Bajoran. Tuvok realizes the negative image matches his own description.
Janeway discovers a message to Tuvok from the Bajoran, a former Maquis named Teero Anaydis who experimented with mind control; his message triggered Tuvok to 'attack' other Maquis members. Tuvok sends a message to his 'victims,' who then take control of Voyager. However, Janeway helps Tuvok regain control of his mind, and Tuvok performs mindmelds to restore his victims and retake the ship. The recovered crew attend a movie on the holodeck.
Credits
Adapted from Wikipedia contributors, Repression (Star Trek: Voyager). Paragraphs and formatting adjusted; illustrations, reference markers, block quotations and non-story material omitted.