Songstress Sarah Fitzgerald takes a mysterious girl named Rouge as her helper. After one of her performances, Sarah and her lover are attacked, and a woman named Naomi approaches Rouge with information about Sarah. What is Sarah hiding in her past?

As Rouge struggles against Aerkos, Silvia, and Grauphon, Eden shows up to save her, but it turns out he's also part of the Immortal Nine. A Usurper ship and Cyan show up, and the situation spirals into chaos. Could Cyan really be Rouge's sister?