The girls are travelling, when Mokona tells them to go up. Mokona then reveals a Machine is up there in one of the flying mountains.

Caldina and Ascot manages to catch up with them. Caldina tells Ascot, she'll take care of everything, and tells him to wait for her. Caldina uses a spell to think the ground is soft and shaky, as well as big rocks falling on them.

THe girls panic, and fall to the bottom. They wake up and see a cave, when the ground continues to shake. Once inside, they see Clef, where he tells them he had save Princess Emeraude, and she wants to talk to them. Fuu isn't convinced, and warns the others, saying it's too easy.

They enter another room, where they see Princess Emeraude, and two guards with her. Fuu then questions how they could defeat Zagato. Princess Emeraude and her two guards then turn into monsters, and proceeds to attack them.

Although they cannot hurt them, the monster can. Hikaru, Umi and Fuu knows it's only an illusion, and tries to concentrate

Zagato informs Princess Emeraude that he is using mind control to send one of the Princess' skilled swordsmen/royal guard to kill the girls. She begs Zagato to stop, but he doesn't listen.

With the girls, they are traveling to the volcano-like shrine to revive Hikaru's machine, only to be attacked by a big flying bird. They try to fight it off with their swords, but it's no use. It then takes a hold of Umi and flies off.

Fuu tries to give Umi her sword, but Umi's sword turns into water while Fuu grabbed it. Fuu only has one choice, and throws her own sword to Umi. Umi catches it, but is too heavy. She tries to hold onto it, but drops it instead.

The bird continues to fly, and a guy kills the bird. Hikaru and Fuu catches Umi, and she comments how heavy Fuu's sword is. Fuu then holds it, and it's light as a feather. They then soon figure out that the swords, was made specially for each other. Anyone else who tries to use it (including each other) it won't let them.

Umi then wan

Hikaru, Umi, and Fuu have been reunited with their families, but their hearts are still not at ease. The three promise to meet each other at Tokyo Tower, the place where they first met. Suddenly, with another mysterious flash of light, the three girls are whisked back to Cephiro, where Mokona and Clef await them.

Hikaru, Umi, and Fuu ask Eagle why Autozam is invading Cephiro, when a giant metallic dragon appeared above them! It is Dome, the mobile fortress of Fahren, led by First Princess Aska, who wishes to become the Pillar of Cephiro. The girls follow Eagle's FTO which flew off to spy on Dome.

Hikaru returns to the castle, but with her sword broken, she cannot call for her Rune-God. Meanwhile, Clef's group captures Alcyone and interrogates her. Clef, feeling something more behind Alcyone's words, becomes even more concerned. Suddenly, Bravada – the mobile fortress of Chizeta – arrives at Cephiro carrying the two princesses Tarta and Tatra.

Hikaru sits depressed, unable to help her two kidnapped friends. Seeing Hikaru so sad, Presea is determined to revive the broken sword. Nova appears in Hikau's heart and tells her that every hardship she has faced is all Emeraude's fault. Hikaru, attacked by Nova's words, slowly falls into the darkness within…

Aska tries to keep Fuu aboard the Dome, but Ferio jumps into the scene and rescues her! However, Hikaru's battle with Nova seems to be all but lost. Can Presea's desperate pleas to Hikaru reach the Magic Knight's heart?

Umi and Fuu continue fighting the monsters in the castle's residential quarters. Hikaru chases after Nova, who had threatened to kill Lantis. Nova finds him with Eagle, and promptly attacks! Meanwhile, Umi and Fuu are struggling against the monsters, but they realize that the black sphere is taking in the children's fear to create monsters…

As Umi and Fuu are continuing to fight the invasion of monsters storming the castle they discover the source of the monster's power are the children's fears being taken in like a big black ominous cloud spreading. Worried he hasn't been able to contact Eagle Geo makes the decision to attack, just then Aska shows up, not seeing the Rune Gods around she assumes that they have been defeated and calls out Sang Yung to protect her.

Nova is now back in Hikaru's heart where she belongs. With her dying breath, Alcyone unveils Debonair's location: Cephiro's alternate realm. The Magic Knights and their Rune Gods are ready to end the struggle once and for all...