The team returned to Palutena's Temple to make preparations for their journey into the Underworld. Pit and Palutena possessed a purple gem with the Underworld Army's symbol inside. The gem was the key to the Underworld, which would make getting access easier, but they still needed to up their strength against the dark witches and their monsters, since they were travling to their turf. Sarah was informed by Bella and Jonathan that she did not need to use the Shining Rod in order to use the exclusive spells. While not all spells were meant for battle, they were very strong and powerful. Before the team left, Bella informed Sarah of the sixth word: lyonne. She also informed her that it was the first word she ever found. Bella then gave Sarah some advice on its meaning, "It is probably the most important word of all," Bella explained. "Only those who understand its true meaning, will be able to follow the path it leads." Sarah took her advice, and then gathered her supplies and left with her aunt and friends. Bella had managed to bring Palutena along for the battle, by using a special spell to bring a stone statue of a pegacorn(combination of a pegasus and unicorn) to life. The pegacorn out of its stone state, had a white coat, mane and tail. It also had an elegant body. Bella named the pegacorn after the ancient moon goddess: Selene.
The team flew out of the door that Pit often used to take off into the skies. Jonathan and Lilly used their brooms, Sarah rode Silverwind, Palutena rode Selene, and Pit once again flew with Bella's aid. They flew down into a ravine, they kept flying downward, until the gem began to shine and open a portal to the Underworld. The portal resembled an omnious purple eye, but the pupil was white instead of black. After a shocking portal of light, they arrived in the dark, volcanic Underworld. Many monsters were waiting along with some evil mages. The managed to beat them, and kept on exploring the Underworld until they arrived at a re-constructed Underworld Castle. The castle looked very similar to what Pit had seen before, but of course with some changes to fit the dark mages' desire. However, they did not expect anyone to arrive in the Underworld, since no mage could travel between dimensions without the Shining Rod. So the team managed to sneak in, due to a lack of outer security. The team then explored the castle dungeons searching for Artemis.
They kept on searching until they found a struggling Artemis trapped in her cell. They noticed that she had been clamped to the wall, and was having her magic drained by the clamps, and were very strong. To a mage, magic acted like a secondary life force. Even if a mage had been drained of magic, they could still survive, but only be super weak and powerless. The team managed to free her, but Artemis had been almost drained of her magic, leaving her weak. Artemis apologized to Sarah for having the team risk their lives to try and save her. However Sarah told Artemis that she was one of her greatest friends, and that she valued their friendship greatly. Sarah then thanked Artemis for all the times they had, and the help they got from each other. However, Sarah did not stop there. She continued by expressing her gratitude to everyone she had met. She was grateful for all the help she had received. Sarah's gratitude toward all of her friends and allies, resulted in the Rod activating. Jonathan's poster also activated with the orange section lighting up. The section had Pit wielding a weapon known as a staff. Bella recognized the glow, as another word being revived. Sarah understood that she had found the meaning of the sixth word. She then recited the word: "Lyonne." The Rod did not change its form though, and instead triggered a powerful healing spell capable of restoring magic to a mage who had been drained. The spell saved Artemis by giving her new magical energy. Sarah was glad that her friend was safe, and Jonathan was amazed that another word had been revived.