Excalibur (2012 film)

From the director of Sherlock Holmes: A Game of Shadows, a hero named Arthur gains assist from the wizard, Merlim, a princess, Guinevere and an owl, Archimedes in a search to find the sword, known as Excalibur to defeat the evil King ???, who has overthrown his father, King Uther Pendragon.

Characters

 * Arthur (Shia LaBeouf)
 * Guinevere (Ashley Greene)
 * Merlin (Christopher Lioyd)
 * Uther Pendragon (???)
 * Igraine (???)
 * Archimedes
 * King ??? (Tom Hiddleston) - the main antagonist

Plot
???