Star Trek: The Next Generation - Season 4 (1990)

On a rescue mission to an alien shipwrecked training mission, they discover one of its trainees to be a human.

Dr. Crusher's fear of losing loved ones becomes real when her worries create an alternate reality.

The crew of the Enterprise enters into orbit around the home planet of their former crewmate, Tasha Yar, where they encounter her sister.

When the leader of the Klingon High Council passes on, Picard finds himself in the middle of the struggle for the now-vacant position. Meanwhile, Worf reunites with a past love, only to find he now has a son.

Riker awakens sixteen years after an away mission where he contracted a disease which destroyed his memory back to the point of infection - or so he's told.

Before leaving for Starfleet Academy, Wesley Crusher accompanies Captain Picard on a dangerous mission.

As an unknown force drags the Enterprise, Deanna Troi struggles with the loss of her empathic abilities.

Data tries to comprehend the complex emotions between O'Brien and Keiko, who are about to be married.

After being fired upon by a Cardassian vessel, Picard races against time to find out the facts behind the Cardassian commander's claim that the Federation attacked one of their outposts.

While answering a distress call, Picard finds himself not sure of exactly who he is dealing with, but he's sure he's not dealing with the planet's version of the Devil, as she claims to be.

Effects of passing through a wormhole give the Enterprise crew a sense that they were unconscious for more than the thirty seconds they've been led to believe.

Disguised as an alien prior to First Contact, Will's life becomes imperiled when incurred injuries reveal his foreign internal structure to a xenophobic alien population.

As Geordi La Forge finally meets the real Dr. Leah Brahms, a tragic first contact leaves the Enterprise with a gigantic galactic infant suckling the ship's energy.

The Enterprise gets trapped in a Tyken's Rift, an energy-absorbing rupture in space, where all but Data, Troi and Guinan experience rising hallucinations and paranoia.

Lt. Commander Geordi La Forge and an old friend fight to defeat a parasite that is trying to transform them into another species.

When assigned to investigate an unknown probe, Lt. Barclay is electrocuted through a shuttlecraft's computer, where he receives an unexplainable boost of confidence and a vast increase in his knowledge.

Aiming to get out of Jean-Luc's debt, Q forces Capt. Picard and his officers to live out the Legend of Robin Hood - with a past acquaintance as Maid Marian.

A retired admiral boards the Enterprise in an effort to determine the actions aboard the ship surrounding an act of sabotage and possible treason.

Counselor Troi's mother visits the Enterprise and becomes infatuated with a man whose culture forces him into a suicidal ritual called "The Resolution."

Dr. Crusher falls for someone who's not at all what she expects him to be.

Geordi is brainwashed by the Romulans to start a war between the Klingons and the Federation

When a female crew member is infatuated with Lieutenant Commander Data, he decides to give a romantic relationship a try. Also, the Enterprise finds itself having to maneuver through a dangerous nebula.

Both Captain Picard and Lt. Worf must decide where their priorities lie as the Klingon Empire descends into a bitter civil war.