Music idol Sheryl Nome arrives at the Macross Frontier fleet for a concert performance. In the meantime, fleet command deals with an unidentified & powerful alien enemy.

Overwhelmed by the new enemies' speed & power (despite their lesser numbers), fleet defenses cannot prevent some of the alien bio mecha from penetrating the main colony ship. Teenage music fan Ranka Lee, young student Saotome Alto & S.M.S. VF-25 veteran pilot Ozma Lee are all involved in the ordeal.

Sheryl gives a consolation concert at planet Galia 4, but because of an undisclosed illness she cancels her concert, which causes a huge riot.

Ranka's pet Ai-kun suddenly disappears. Ranka asks Brera for help and they look for Ai-kun together. Along the way, Brera asks Ranka who does she sing for? Ranka, who's beginning to feel doubt about her singing, starts to consider her true feelings. Meanwhile, Sheryl tells Alto that she will no longer sing.