Dark forces reign over the Digital World and only the DigiDestined can help rid it of evil forever. In Digimon Frontier, Takuya Kanbara and four other children, a new class of DigiDestined, battle evil in the DigiWorld not as Digimon trainers but as Digimon themselves! After boarding the Trailmon train bound for the Digital World, Takuya and friends learn the story of 10 Ancient Warriors and their Digi-Spirits and soon realize that they too have their own Spirits that help guide and evolve them into Digimon to battle Cherubimon, a Celestial Digimon who's turned evil. Their mission to save the DigiWorld grows more important every day, and as they learn the history of the Celestial Digimon and Ancient Warriors it also becomes more dangerous.