The
Enterprise receives a distress signal from a
shuttlecraft returning Deanna Troi from a conference. They find that the shuttle has crashed on a desolate planet, Vagra II, and while they can find the life signs of Troi and the pilot, Lt. Ben Prieto (
Raymond Forchion), they are unable to beam the two to the ship. An away team beams down and discovers an animated pool of a tar-like substance, a malevolent life form that calls itself Armus. When Lt. Yar attempts to approach the shuttle, Armus hurls her back with a
psychokinetic blast, killing her instantly. The away team is brought back to the
Enterprise but the injuries to Yar are too great for Dr.
Crusher (
Gates McFadden) to remedy and they are unable to resuscitate her. A second away team is sent to the planet; Armus taunts the crew members and maintains his grasp of the shuttle. Troi has communicated with Armus and learned that it is a physical manifestation of evil from the bodies of an ancient race, abandoned on Vagra II. The
Enterprise scans Armus' energy field, finding that when he expresses his rage to Troi rather than suppressing it, the field weakens, which could allow them to beam Troi and Prieto out of the shuttle. After Armus toys with Troi by completely engulfing Commander
Riker (
Jonathan Frakes), Captain Picard beams down to speak to Armus directly, sending the rest of the away team to the ship. Picard engages Armus in a heated discussion to discover its motive, which is to seek revenge on those that abandoned it on Vagra II. Armus is angered to a point where the energy field is dissipated enough, allowing for Picard, Troi and Prieto to be safely beamed back to the
Enterprise, leaving Armus wailing in fury and alone once again. After destroying the shuttlecraft from orbit, Picard orders a permanent quarantine on Vagra II. As they leave Vagra II, the crew holds a memorial service for Lt. Yar, with a recorded simulation of Yar addressing each of the senior crew members telling them what they meant to her and what she learned from each of them. After the service,
Data (
Brent Spiner), who had previously become close to Yar, tells Picard that he is confused as to the purpose of the service. He says that his thoughts are not for Tasha but for himself, because he can only think of how empty his life will be without her. He asks if he has missed the point, but Picard assures him he got it. ==Production==