 While Steve Malone, like the doctors Bennell in the earlier films, also has a medical/scientific profession, the main character in this film is his daughter Marti.The character of Becky/Elizabeth (Bennell's love interest and his companion during his escape attempt from the invaders) is dropped completely, as are Bennell's acquaintances and later antagonists Dr. Kaufman/Kibner and the Belicecs.Re-invented, however, are two elements which had been dropped from the 1978 version