After the successful Coup of Ba Sing Se, Prince Zuko and Princess Azula were welcomed home here in a special ceremony, where Lo and Li recounted their historic victory. The combined efforts of Avatar Aang, the Water Tribes and the Earth Kingdom mounted a planned invasion in an attempt to overthrow the Fire Nation during its weakest moment. Despite a powerful defense from the Fire Nation, the Royal Plaza temporarily fell under the control of its assailants as they progressed to attack the Fire Nation's capital itself. Shortly afterward it was reclaimed by the Fire Nation when the assailants were captured and imprisoned.