While the King is preoccupied with playing Gungi, Gon and the other Hunters sneak closer and closer to their target. They get a lucky break when an unforeseen accident results in the deactivation of Neferpitou's En, making the defenses surrounding the castle temporarily vulnerable. The Extermination team readies for their showdown, but with only a few days left before the selection, will they be in time to save the citizens from certain death?!
