As the team gets closer to the Dark Kingdom, Rapunzel decided to celebrate Eugene's birthday with him, even though they didn't know his official birth date. Just then, Madame Canardist and Vigor the Visionary arrived, having followed them on their travels, to give them information about the last piece of the scroll. While Eugene was skeptical about it, Rapunzel excitedly went to a labyrinth with Vigor as their guide.
To their surprise, Vigor began to speak and introduced himself as Lord Demanitus. He explained that millennia ago, a phenomenon happened that cause a drop from the sun and a stone from the moon to fall unto the earth. He and his pupils (Sugracha, Matthews, and presumably Mother Gothel), went to search for the Sun Drop and Moon Stone when his pupils turned against him and join allegiances with his enemy, Zhan Tiri. It took all the power he had to stop this evil and he divided the scroll containing his research of the Sun Drop and Moon Stone into four pieces and hid them to prevent them from falling into the wrong hands. He also managed to merge himself with Vigor to keep Zhan Tiri from finding him and he was waiting for the right moment to come out because the spell he used worked only once and it only lasts a few hours before he became a part of Vigor forever.
Following Demanitus' guidance, the team went through a series of puzzles and riddles in the maze, one of which includes a fountain that demands a coin from each person to let them pass safely. When they made it to the end of the maze, Eugene crossed a bridge made of crystals to unlock the chest containing the last scroll piece. As soon as Eugene came back, however, they were soon attacked by one of Damenitus' mechanisms because Eugene hadn't dropped his coin in the fountain out of disbelief. They later got themselves trapped in a room in an attempt to escape the machine.
With his time nearly out, Demanitus quickly explained that they must unite the Sun Drop and Moon Stone to ignite an ultimate power and the scroll contains instructions on how to use it. He also explained that if the Sun Drop and the Moon Stone are not united, the black rocks will reawaken and search for Rapunzel forever, destroying everything in its path. He also convinced Eugene to continue to have faith, a faith which he already had in Rapunzel. When Rapunzel asked him how her hair works and what the Moon Stone does, he said that these are the things she must learn for herself and that he has faith in her. As soon as he said it, he became emerged with Vigor for good. Just then, the mechanism came in and attempts to harm them, only to be destroyed by Rapunzel's shielding power from her hair.
Rapunzel and Eugene returned Vigor to Madame Canardist, who soon told them that Vigor wanted Eugene to have the gem on his turban. Then they returned to their friends, where Rapunzel tells the whole story to them. Meanwhile, Eugene opened up the gem to find a piece of paper, which reads, "At the end of Rapunzel's journey, one of her party shall turn against her". Eugene looked at each party member, wondering who it could be, and his eyes widen when he saw that Cassandra was smiling suspiciously.
- Zachary Levi as Flynn Rider
- Mandy Moore as Rapunzel
- Carol Kane as Madame Canardist
- Dee Bradley Baker as Vigor
- Timothy Dalton as Lord Demanitus (debut; via Vigor's body)
- James Monroe Iglehart as Lance Strongbow
- Paul F. Tompkins as Shorty
- Demanitus Maze (first appearance)
Powerful Objects of Supreme Power
- Magic Blonde Hair
- Moonstone (flashback & picture on scroll)
- Sundrop Flower (flashback & picture on scroll)
- The Ultimate Power (first mentioned)
- The fourth and final piece of the ancient scroll is retrieved.
- It's revealed that Mrs. Sugarby and Matthews and possibly Mother Gothel once were the pupils of Lord Demanitus, until they betrayed him to free and serve their new master, Zhan Tiri.
- Rapunzel mentioned the Demanitus Device that stopped the blizzard in Queen for a Day.
- It is the third time Rapunzel unleashes the protective shield from her hair, following to "What the Hair?!" and "The Quest for Varian". Rapunzel will also use the protective shield from her hair during the second half of Rapunzel's Return.
- This is the second episode that Rapunzel, Eugene, Madame Canardist and Vigor are inside the fortune telling wagon after Vigor the Visionary.
- Also, this is Pascal's only episode to be inside the fortune telling wagon and the only time to meet Madame Canardist and Vigor.
- Rapunzel granted Eugene a birthday.
- This foreshadows Cassandra's Revenge when Rapunzel is throwing Eugene a surprise birthday party alongside the help from Pascal, Maximus, Lance, Kiera, Catalina, Xavier, Pete, Stan, Feldspar, Old Lady Crowley, Monty, Attila, Big Nose, Ulf, Vladimir, Shorty, Nigel, King Frederic, Queen Arianna, Faith, Hazel, King Edmund and Hamuel.
- Rapunzel and Eugene do not wear their new outfits.
- The way Eugene takes a coin from his miniature satchel in this episode is going to be similar to the way he walks on the precipice to give the ring to Varian in Cassandra's Revenge.
- Also the way Madame Canardist catches the coin is going to be similar to the way Eugene catches the ring before walking on the precipice in Cassandra's Revenge
- The bronze graphtyc, Adira's Black Rock sword and The Spire made a cameo in this episode.
- Cassandra appears in this episode at the beginning and the end of the episode but doesn't have dialogue like in Max's Enemy.
- It is implied that one of Lord Demanitus' three pupils, who had ultimately double-crossed him to Zhan Tiri was Gothel herself.
- The way Eugene's face is shown at the end of the episode is going to be similar way Rapunzel's face is at the beginning of Rapunzel's Return.
- Also, it is similar to the Sugracha's face and Rapunzel's face were shown during the episode Painter's Block plus Varian's face was shown at the end of The Alchemist Returns.
- This episode foreshadows Plus Est En Vous when Rapunzel unites the Sun Drop and Moon Stone after she healed Cassandra from dying and also Eugene, Varian, Ruddiger, Quirin, Kiera, Catalina, Lance, Pete, Stan, Maximus, Fidella, Monty, Old Lady Crowley, Xavier, Feldspar, Ulf, Attila, Vladimir, Big Nose, Shorty, Milton the Goat, King Frederic, Queen Arianna, Adira, King Edmund, Hector and his pets after being weakened by the Decay Incantation.