The plan was that Emperor Komei, during the Imperial visit to Yamato, would hold a meeting on military actions for the purpose of expulsion of foreigners, thereby gaining control of the military and the government from the Tokugawa Shogunate.
孝明天皇の大和行幸の際に、天皇自ら攘夷のための軍議を開き、軍議を開くことによって自動的に幕府から軍事権および施政権を取り返すということを企てていた。