Star Trek: The Next Generation [TNG] - Yesterday's Enterprise Season 3 Episode 15
Stardate: 43625.2 When the Enterprise- C comes through a time rift, time is changed so the federation is at war with the Klingons and Tasha Yar never died.
Stardate: 43625.2 When the Enterprise- C comes through a time rift, time is changed so the federation is at war with the Klingons and Tasha Yar never died.