The Rogue of Sherwood then tries to relieve the Doctor of his TARDIS. Robin, ever intent on stealing all he can, produces his steel, The Doctor defends himself well, with a spoon. When Clara compliments his skill, he cites training from the likes of Richard the Lionheart (contemporary of Robin Hood), Cyrano de Bergerac (fictional) and Errol Flynn (played Robin Hood). On a bridge over a stream the fight continues till the Doctor manages to knock Robin off, a la the famous quarterstaff fight with Little John.
Through an interrogation with Clara, the Sheriff reveals that the Robot army crashed in a skyship, and need gold to repair their ship, in exchange for power. Escaping the dungeons, Robin and the Doctor find the robots' ship and access the memory banks. The ship was heading to the Promised Land, like the half-face man from Deep Breath (8.01). The Doctor shows images in the memory banks of the legend that is Robin Hood, including a picture of Patrick Troughton (2rd Doctor, first person to play Robin Hood on TV) playing the Prince of Thieves in a BBC production from 1953.
A massive fight between Robin and Nottingham's Sheriff ends in Robin using the Doctor's bridge maneuver to throw the evil sheriff into a vat of molten gold.
When the TARDIS disappears, Marrion is revealed and returned to Robin, an aspect of the story that was almost forgotten.
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