Kingdom of Amethyst

Kingdom of Amethyst is one of the powerful kingdoms on the continent of Cielo... Kingdom of Amethyst, Aquamarine, and Sapphire are the powerful kingdoms... Each kingdom holds the gemstone that is the reason why the kingdoms are united... But what if a one rogue kingdom planned to attack the other kingdoms and get the gemstones in order to rule the continent of Cielo? Can the warriors defend their kingdoms? Will the kingdoms help each other?