Following a 16-year coma after being struck by a truck in the year 2014, Akira Natsume awakens to find himself within a machine. He is welcomed by police officer Minami Uezono and her android sidekick Alma as he adjusts to the new interface. The team demonstrates to Akira that his brain is housed within an EX-ARM, a weapon of mass devastation. The three must use their wits and battle abilities to escape from an opposing smuggling ship. While Akira is initially hesitant to fight, he eventually remembers his brother's comments from before the disaster. The recollection motivates him to act, and he takes over Alma's body to battle his opponents using martial arts. When Alma connects him to one of the ship's ports, he finds the horrific potential of his EX-ARM by effortlessly hacking and assuming control of the vessel.