North Song Dynasty in ancient China, a legendary figure emerged in North Song's capital Kai Feng. He is governor Zheng Bao. Peasants call him Bao Gong (Lord Bao). In a corrupted government, he differentiates himself by demonstrating extreme honestly, uprightness, impartiality, and the courage to uphold justice, which, won him the title "Justice Bao". In Chinese folklore, Zheng Bao is the reincarnation of Megrez (Chinese God of Wisdom) and possesses supernatural powers. Kai Feng Story tells the legend of Bao Gong in a brand new type of personality. (Source: u17)

The series stars Hat, the descendant of a hero who fought an evil king and sealed Devildom. Hat falls into Devildom and finds he has to defeat the evil king.

The series follows the antics of tenth-grade student Eisaku Yazawa who wants to become a bousouzoku, a motorcycle gang member.

It is the sequel of Versus Revolution, continuing the chain of events after the battle between the Invaders and Revolutionary. It is also the last season and conclusion of the Versus saga in the anime The 'V' mark that was once on Katta Kirifuda's forehead hides a mysterious force. However, the power was sealed off. Even though the impact of removing the seal does not do much, but Hamukatsu starts to talk! Plus more hamsters that are like Hamukatsu starts to appear! They were then told about a secret organization, the "Rare Killers", with the members being transfer students of the school! What is the mystery of the hamsters like Hamukatsu and who exactly are the Rare Killers? The final battle is about to start! (Source: Duel Masters Wikia)