Time Trax (1993)

Season 2: Episode 19

A distress call from the future lets Lambert know that he must find a scarlet koala to stop a plague. He enlists the help of a woman scientist whose father was the last person to see the rare koala, but when they reach the jungle they are captured by aboriginies who believs that the scarlet koala is sacred. Then Lambert discovers that they aren't the only ones after a koala.