DOCTOR: He wants to rob the world of Magna Carta. Have mercy! He is the Master in disguise. MASTER: The Doctor. MASTER: You will know that the King and his dead brothers are believed to be the devil's work.
Plan: A: The Doctor; Q: Who discovered that The Master was behind the false King? A: the Magna Carta; Q: What does The Doctor want to prevent The Master from signing? Summary: The Doctor having discovered that The Master is behind the false King, works to stop the Master from preventing the Magna Carta to be signed.