After Megumi's group manages to defeat all of the Saiarks in Pikarigaoka, they are approached by Glasan, who informs them that Iona had disappeared, prompting the Cures to search for her. Upon learning that Iona is trapped in another dimension, Blue calls the Cures to the Cross Mirror Room to combine their feelings of wanting to help her. Meawhile, Iona is overwhelmed by Phantom, who takes the Pretty Change Mirror she got from Maria and burned up her transformation PreCards, sending her into despair.
