Answer:
In medieval Korea, the King appointed his son Chang as prince and heir. Later, however, he married a young woman of the Cho tribe, and when the queen became pregnant, Prince Chang discovered that his new half-brother would take precedence as the new monarch. The kingdom is ravaged by a smallpox outbreak, and the King becomes ill. A doctor from a distant clinic is called to the Royal Palace in Hanyang, and while treating the King, he attacks his apprentice. No one sees the King, the scholars of the Kingkingdom fear the King may be dead, and his death being concealed. But prince Chang and the scholars decide to claim the throne, initiating a failed coup.