After a tragic accident in 2014, Akira Natsume emerges from a 16-year coma to find himself encased in a powerful weapon known as an EX-ARM. With the help of police officer Minami Uezono and her android partner Alma, Akira must navigate a dangerous escape on an enemy ship. Reluctant at first, Akira's memories of his brother's wisdom spur him to action, using Alma's body for combat. Unleashing the full potential of his EX-ARM, Akira hacks into the ship's controls effortlessly. Upon returning to safety, Akira joins the EX-ARM Countermeasure Prevention Team, determined to stop the misuse of these destructive weapons and bring peace to the world.