In the Movie, Jet was a prisoner of the "Water and Power" corporation along with Tank Girl. When Tank arrived, she inspired Jet to want to break free. When she did, she stole one of the company's jets. Eventually in the movie, she souped up the jet (during the same time Tank souped up her Tank) and became more of a butt kicking character rather than a frightened prisoner. By the end of the movie, she'd overcame her timidness to become a strong and spunky member of the Tank Girl crew.