In the world of Macross Delta, signals were received from the long lost Megaroad-01. A mysterious "Lady M" (レディM "Redi Emu") from Megaroad-01, whose identity was never revealed in the TV series, loomed large behind the scenes. What is known that this mysterious figure had been sponsoring researches on songs/Protoculture since Space War I, and eventually created the ultimate songtress Mikumo Guynemer. Given the grand vision, political influence, and competence of Lady M in dealing with the New United Government and initiating the researches, the most likely candidate is Misa, the Commander of Megaroad-01 and the one who deciphered the lyrics of the song "."