Rapunzel grapples with the responsibilities of being a princess and the overprotective ways of her father. While she wholeheartedly loves Eugene, Rapunzel does not share his immediate desire to get married and settle down within the castle walls. Determined to live life on her own terms, she and her tough-as-nails Lady-in-Waiting Cassandra embark on a secret adventure where they encounter mystical rocks that magically cause Rapunzel’s long blonde hair to grow back. Impossible to break and difficult to hide, Rapunzel must learn to embrace her hair and all that it represents.
Six months after escaping Mother Gothel and reuniting with her birth parents, King Frederic and Queen Arianna of Corona, Princess Rapunzel is unable to properly adjust due to her father's constant protection. When she and her handmaiden Cassandra sneak out of the castle, they come upon some magical black rock spikes that magically restores Rapunzel's long blonde hair as they, Eugene Fitzherbert, Pascal the chameleon, Maximus the horse and young alchemist Varian uncover the mystery of her hair's return and its connection to the black rocks growing around Corona. Eventually, Rapunzel learns that Sundrop Flower's power resides in her with the black rocks directing her to the Dark Kingdom.