They Came from Outer Space Maid Marian and Her Merry Men : Season 3 Episode 4

The sudden appearance of a comet across the skies of Worksop triggers a number of events: general panic amongst the peasants, including Hayley chundering; Snooker falls off a ladder and ends up covered in glue and leaves; Guy reveals to Marian that his only friend is an invisible alien named Plopbop; and the guards rush back to Nottingham Castle warning of alien invasion. Upon hearing this, King John orders a protective arsenal from alien invasion, and naturally the only way to finance it is to tax the peasants some more - upon realising that there is no money left in Worksop, the King decides that they should steal all the peasants clothes. The Merry Men find Snooker out of Worksop after his accident, who looks rather like an alien after his accident. Together, they all return to Worksop, only to be met by 21½ naked peasants, and Marian vows to return their clothes to them. The meet Guy in the forest, convince him that Snooker is Plopbop, and trick him into leaving the castle key outs