It's planned that in a future update, there will be bandits and a final boss called The Duke of Navezgane. The player will have to do a bunch of quests and eventually will be sent to meet the Duke. How the final battle will go and what will happen after is unknown for now.
A20 Developer Diary Discussions
in General Discussion
Posted
Duke: Let the final battle begin!
"Duke pulls out a Yu-Gi-Oh deck"