Arthur Kirkland's in big trouble.When hunting for the contact number of Guinness World Records while driving at 40m/h,he nearly ran over a man and now the said man has Amnesia. A few streets away,Gilbert and Antonio are searching for their friend Francis who left their shared apartment but never came back. And the missing man only has Luck, Arthur and a Mini Cooper to blame.

Medieval!AU: Arthur is the eldest son of the King of England and next in line for the throne, and Francis is an ordinary peasant lucky - or unlucky? - enough to be asked to teach Arthur to speak French. Just how it is that he happens to be the one man extraordinary enough to capture Arthur's heart, no one could ever explain.