Picard encounters an old flame when the Enterprise investigates a chronal disturbance.
Tasha Yar comes to an untimely end in every sense of the word.
Worf’s loyalty is questioned when the ship picks up some Klingon fugitives.
The Enterprise ends up in a distant galaxy as the Traveler makes his first appearance.
Captain Picard has to figure out how to retrieve Lt. Yar from an alien who he needs to negotiate with for a valuable vaccine.