The year is Year 2058 and the 'White Knight', Keith Aero Windermere who is a royal prince but as an illegitimate child of the king has no right to the throne, returns home to Windermere. His younger brother, Heinz, the heir to the throne is the "wind singer" and his voice can cause havoc to the enemy. Everyone in Windermere is preparing for war and everything will depend on the relationships of the two brothers and the people around them! The long-awaited manga providing the background story of the airborne knights who take part in "Macross Delta"! (The story takes place 9 years prior to the events of Macros Delta.)