Kiyomori launches a coup d'etat by placing the cloistered Emperor Go-Shirakawa under confinement, and finally becomes the first samurai to seize control over the entire country. While Kiyomori manipulates the Imperial Court freely from Fukuhara, Prince Mochihito (Go-Shirakawa's son), who has been put in a miserable situation by Kiyomori, devises a plot to take up arms against the Taira family. Yoshitsune, the son of Yoshitomo and Tokiwa, is also gaining strength with Benkei, formerly named Oniwaka. On February 21, 1180, Prince Tokihito (Tokuko's son) ascends the throne from Emperor Takakura and becomes Emperor Antoku as Kiyomori hoped.