The Enterprise crew follows Data back in time to 19th-century San Francisco, where an old friend must help them stop a pair of aliens from murdering innocent people.
When the Enterprise comes to the aid of a Federation starship, Lieutenant Barclay is forced to confront his fear of the transporter -- discovering what he believes to be an alien creature inside the transporter beam.
The Enterprise transports an alien ambassador to mediate peace talks between two warring peoples, but the visitor uses Counselor Troi to realize his selfish ambition.
The Enterprise discovers a mythical structure in space, and a Federation legend who has survived for decades in a transporter buffer. Montgomery Scott must face his new future in the 24th century.
A talented student joins the crew of the Enterprise, but it isn't long before she is forced to reveal her supernatural powers -- drawing the attention of the Q Continuum.
Worf, Alexander and Troi engage in an Old West adventure on the holodeck, but an engineering experiment with Data causes the fantasy to go horribly wrong.
A prisoner of the Cardassians, Captain Picard is physically and mentally tortured. Riker challenges Captain Jelico during negotiates with the Cardassians, and is relieved of duty.
Professor Moriarty's sentient holodeck character is accidentally reactivated, and the crew is stunned to see him boldly exit the holodeck matrix ... and continue to exist.
LaForge and the crew investigate the murder of Federation scientists on board a station near Klingon space. Geordi is shocked when one of the crewmen presumed dead returns to the station.
Troi awakens to discover that she has been kidnapped by Romulans and surgically altered to appear as one of them, in order to help smuggle valuable cargo into the hands of the Federation.
An experiment on Deep Space Nine triggers symbolic dreams in Data's positronic brain. Worf learns that his father may not be dead, and journeys to a Romulan prison colony to learn the truth.
Worf finds himself trapped at a Romulan prison colony with a group of Klingons who aren't interested in leaving, and discovers a shocking secret about them.
Picard finds himself trapped on board the Enterprise after the ship is evacuated for a routine but lethal energy sweep -- and discovers a group of mercenaries working to steal a volatile engine byproduct for sale on the black market.
The death of a former mentor leaves Picard with the legacy of his work, sending the Enterprise on an archaeological hunt across the galaxy. But the Federation isn't the only one looking for this ancient secret.
Riker is convinced he is going insane when he wakes up in an alien mental hospital, and cannot distinguish the truth of that reality from his life on the Enterprise.
A Ferengi scientist is found dead after his attempt to prove a controversial theory fails. Dr. Crusher's investigation into his death puts her career in Starfleet at risk.
A quest for a vision reveals to Worf the great warrior Kahless, inexplicably reborn from the distant past. Worf supports the legendary hero in an attempt to seize control of the Klingon Empire.
Riker finds an exact duplicate of himself stranded on a downed ship, from which Riker himself escaped years earlier. The result of a transporter error, Lieutenant Will Riker attempts to rekindle a relationship with Deanna Troi.
Picard, Troi, Data and LaForge return from a conference to find the Enterprise frozen in time in the middle of a battle with a Romulan Warbird -- with time itself fractured all around them.
A frightening encounter with the Borg leads Data to experience his first emotion. He attempts to duplicate the experience, but is only able to do so with the Borg's help.
