Star Trek: Enterprise

Season 1, Episode 20

Episode Title: Oasis

Air Date: 2002-04-03

Overview:

While exploring a crashed vessel on a desolate planet, the Enterprise crew is haunted by some ghostly figures, and they encounter an alien race that has survived despite insurmountable odds. Trip helps repair their derelict vessel and is befriended by Liana, an attractive humanoid alien who develops feelings for him.