Way beneath the Overworld, in the Underground Empire “Jeojeojeo“, the 17th Great King’s sudden declaration about leaving the throne, a contest is announced and the winner will get to be the new Great King. The Rank A prisoner, a dethroned half prince named Jet follows his father’s command and participates in this but… “What? To be the great king I have to protect that loser?!“ That is the “Token“. Jet needs to protect it in the fierce competition of the Underground people, where each person has to protect a “Prince’s Token“?