Ashran the necromancer has taken power in Idhún and enabled the reign of terror of the flying serpents. The first battle for Idhún's freedom will take place on Earth, where Jack and Victoria fight to stop Kirtash, the assassin sent by Ashran to destroy the Idhudites who flew from his tyranny.-微博@摆渡字幕组整理。公元2025年人类经过一次浩劫后,机战兵团已控制地球,全球经此大战后几近灭亡,但残存的部队依旧火力交战毫无停止的迹象,经年累月的战事已使这个无政府状况下的地球更加无宁日人类的未来、希望,直到2039年的一日…。