Digimon Frontier

Takuya, Kouji, Izumi, Junpei, and Tomoki follow mysterious messages onto a train that carries them away from the human world and into the Digital World. There they learn that the land is being torn apart by Cherubimon, one of its three great celestial guardians, who has turned against his former allies.

Instead of partnering with Digimon, the children discover ancient Spirits that let them transform into the Legendary Warriors themselves. As they cross the Digital World by Trailmon, they search for more Spirits, confront warriors serving Cherubimon, and uncover the hidden history behind the rebellion threatening to erase the world around them.