The Japan stage begins! And its winner will go on to the final stage to fight the previous VF Circuit champions. But who are the powerful masked members of Team Unknown, the team that must also be beaten in order to proceed to the final stage...?

Team Unknown is finally unmasked, and while the identities of two of them will come as no surprise... the enigmatic King Z is a different story! At any rate, to actually win the final Japan stage, Team Q4 must beat X, Y, and Z!