El rey de Inglaterra ha muerto y los aspirantes al trono siguen compitiendo. Para designar a un nuevo rey, se organiza un gran torneo en Londres. Kay, hermano de Arthur, compite en su intento por ganar la corona. Todos están listos, pero Kay se da cuenta de que dejó su espada en la posada, así que le pide a Arthur que vaya a buscarla. De camino a la posada, Arthur descubre algo que cambiará su vida a partir de ese momento...
The king of England has died, and his highly coveted throne remains vacant. In order to appoint a worthy monarch, eager knights are summoned to a tournament in London. Kay, Arthur’s brother, has to compete for the crown. However, Kay realizes that his sword was forgotten at the inn, so he sends Arthur to retrieve it. On his way to the inn, the young Arthur stumbles onto something that will affect the lives of every Englishman, especially his own.