Digimon Frontier revives the thrilling action and adventure of the previous three seasons, introducing five new children and a compelling new mission in the Digital World. Takuya, Kouji, Izumi, Junpei, and Tomoki cross paths on a train that transports them to the Digital World, where a conflict against evil is underway. Cherubimon, an Angel Digimon and one of the three angels dispatched to rescue the world from the power-hungry Lucemon, has defected to the dark side, placing the entire Digital World in jeopardy. To engage in this monumental battle, the five CHOSEN ONES must locate the Densetsu no Spirit (Legendary Spirit).