In a lawless settlement known as Scrapyard, beneath the enigmatic space city of Zalem, a disgraced cyber-doctor named Daisuke Ido discovers the detached head of a cyborg woman with no memories. He names her Gally and equips her with a powerful new body, the Berserker. As Gally navigates her new existence, a spark of desperation awakens her dormant skills in the ancient martial art of Panzer Kunst, a legendary fighting style. With no justice to be found, Gally decides to become a hunter-killer, targeting those who prey on the weak. However, she must confront the danger of losing her humanity as she succumbs to her growing bloodlust.