Twilight has caught a very rare desise called the "Uni-Horn Flu", an ultra rare and fatal desises, and since Twilight's not a true alicorn, she's at serious risk of death reguardless of her status, and can only be saved by an even rarer mushroom, so now, Starlight, Lord Shen, Icky, and Iago now must go to the Edge of Equestria to find the lair of the Giant Blue Stinging Death, an horrendus monster of an unspeakable history of volience. Worse off, this happens at a bad time, as another anichent threat of Equestria has been made known in the jungles of Aztecia, the same Jungles of Daring Do's adventures, as Auizotal and the returning Dr. Caballeron since the events of Daring Doom, are seen working with eachother again, this time with a tribe of Aztecian Harpies that worshiped a long imprisoned quetzalcoatl, going by the name of Queen Zal Coatl, and is the shorce of why Ahuizotal is doing what he is and why Caballeron and goons are involved. Zal was a dark queen of wealth and was obcessed with herself. Her greed and self-impourence lead to a terrorable age in Equestia that caused the Alicorn Gods to punish her to begin with. If Twilight were lost or isn't healed in time, Equestia is condemned to the returning reign of a dark winged feathered serpent full of herself. Can our four heroes get the cure ready in time?
(This is what Zal Coatl sings when she comes to equestia.)