Road to Ruisea

Kumari lives in Cevalon, as princess of fire and sun, but has never been outside the castle. Jae is the son of a conspiracist, who, when he was still alive, warned him to trust no one. Chiro is an illusionist, paid by the king and queen to put on shows for the princess at night.
The three teenagers have their worlds collide when Jae shows a map to the princess, a map to a hidden secret kingdom called Ruisea, lost to snow and time. Kumari wants to go there more than anything, but Chiro wouldn't dare let the princess get hurt thanks to some scruffy village ruffian. And the king and queen do not approve of their daughter's desire to travel, but she goes anyway, when one day the kingdom wakes up to find their crops have frozen and there are clouds on the horizon...
Ruisea is lost, and only this map shows its existence. But Kumari thinks that there is one way to reach the ice kingdom - Ocean Express, said to be able to take anyone anywhere they want to go. And so the trio boards the train to take what will surely be a long and exciting journey...
All while being dogged by the bounty hunter Sho, paid by Kumari's parents, to bring her back home no matter what.