A female cyborg with no memories of her past becomes a mercenary in Scrapyard, a post-apocalytpic sprawl built beneath Tiphares, a floating city inhabited by affluent citizens. Alita is a master of an ancient martial art, using it to track down renegade cyborgs. As time goes on, she begins to recall snippets of her past and devotes her time to investigating where she came from. A sequel series, Battle Angel Alita: Last Order ran from 2000–2014, and a final sequel, Gunnm: Mars Chronicle, is currently ongoing. A two-episode animated adaptation of the original comic was released in 1993.