Alto and Sheryl make the best of a lull between events while Grace moves a step closer to her ultimate goal.

After her turbulant downfall over the past few months, Sheryl learns something new about her singing that may just save the Frontier Fleet.

Though her emotions are crushed, Ranka manages to sing through her pain and rescue Frontier. Afterwards, she leaves everything behind in order to set out on an uncertain journey.

Tragedy unfolds across the Frontier fleet as the Vajra attack begins anew. In the midst of destruction, both Ranka and Sheryl desprately try and find new reasons to continue singing.

Alto confronts Sheryl as she lies to him about wishing to end her singing career. Meanwhile, Ranka realizes what and who she is really singing for.

Grace deals a fatal blow to Sheryl's self confidence while Michael and Klan uncover some of the mystery behind the Galatic Fairy's former manager.

We finally learn why the Vajra are such a big threat when a new group of them attack Frontier. They have evoloved to be immune to even reaction weaponry!

Under Grace's leadership, Ranka learns a new, darker version of Aimo which is then put to use against the Vajra in a test battle. Meanwhile, Sheryl's sickness returns as she worries about being forgotten.

In this flashback episode, we learn more about the strange conspiracy that has been brewing since even before Sheryl arrived on Frontier.

The Vajra fleet that folded from Gallia 4 emerges right in the path of the Frontier fleet. A large battle ensues.