After being killed in an explosion set by Desty Nova, Gally is brought back to life in the city of Tiphares by the resourceful yet devious scientist. She learns that the floating city is caught in a chaotic civil war over the public revelation of brain biochips, the Tipharean substitution to the organic human brain. To have any chance at stopping the bloodshed, Gally joins Nova’s newly-formed entourage, which includes his assistants Elf and Zwölf, the battle android Sechs, and the repair robot Deckman 100.

Tiphares and its conflict is just one small piece to an unknown star system that Gally has yet to discover. In hopes of finding more answers to her forgotten past, she and the other group members venture into the vastness of space, beginning an adventure that is set to alter the course of humanity.

Gunnm: Last Order was published in English as Battle Angel Alita: Last Order by VIZ Media from July 23, 2003, to October 11, 2011. Kodansha Comics USA published volumes 16 through 19 from December 4, 2012, to September 9, 2014, due to a change of publishers on the Japanese edition (Shueisha to Kodansha). The series was entirely republished by Kodansha in five omnibus volumes from March 26, 2013, to December 9, 2014. It was also released in Spanish by Planeta DeAgostini in 25 volumes from March 2004 to April 28, 2016.