After the Macross Galaxy fleet is hit by a large-scale Vajra attack, Alto Saotome and his unit head out in the S.M.S. Macross 25 warship to rescue the surviving ships. On the same day Sheryl gives her last live concert on Macross Frontier.

Alto and Ranka make an emergency landing in planet Galia 4 due to a malfunction with their variable fighter.

At Ranka's concert in Mihoshi Academy Ranka, Alto and Sheryl meet. While their thoughts and feelings cross each other during the event, the Vajra attack and Ranka's group becomes caught in a very dangerous and deadly situation.