Note: This episode first introduces the Cardassians, who go on to become the primary procrastinator on Star Trek: Deep Space Nine, as well as playing a vital role in the premise behind Star Trek: Voyager.
Ambassador K'Ehleyr, Worf’s former lover, comes aboard Enterprise with a stunning revelation while endangering her life by investigating deeply into the Khitomer massacre.
4-01: The Best of Both Worlds, Part II
The Enterprise launches a rescue mission of Captain Picard while working to stop the Borg invasion.
4-05: Remember Me
The Enterprise crew mysteriously vanish from existence, leaving behind only Beverly Crusher as the universe collapses in.
4-09: Final Mission
On the eve of departing for Starfleet Academy, Wesley and Picard crash land with an alien pilot on a hot desert with limited resources.