Bojji, a prince in a world where kings are ranked by their deeds and skills, is considered unfit to be the next king due to his disabilities. He runs into Kage, a shadow being with whom he can converse, but who also takes advantage of Bojji's kindness.

King Bosse passes away, naming Bojji as the next king. However, the announcement of the new king does not go as Bojji expects. After being told that Kage has gone on a journey without him, Bojji resolves to go on a journey of his own, to Hiling's dismay.