Akiyuki lives on Sentan Island. A lot changes when Akiyuki boards a bus along with a mysterious white-haired girl who transforms his arm with the lost memories and power of Xam'd. As Xam'd, Akiyuki goes on a rampage and is saved when a foreign girl calms him down. Akiyuki now must gain control of his powers and use them against the Northern Government. All while hoping one day to go home.