Ash arrives at Cameron Palace where a festival is being held to celebrate Sir Aaron, an ancient hero who averted a war that was about to begin outside of the Tree of Beginning. At the festival, Ash, ironically wearing a duplicate of Aaron's outfit, competes in a tournament at Cameron Palace and wins, to become the "Aura Guardian" for that year. As part of the celebration, Ash is granted Aaron's staff, which contains his Pokémon companion, Lucario, whom Aaron had sealed before stopping the war.