When Winnie and Wilbur fly over a castle, they swoop down to take a closer look. When the castle turns out to be nothing more than a ruin, Winnie realizes that they are 'hundreds of years too late' and so makes a swoosh of her wand to her them back to medieval times. The ruin becomes a fully functioning fortress and the two of them are there, in suitable attire, on a day of much archery, jousting and feasting. Winnie disguises herself as a medieval lady-in-waiting.
Wilbur is a dashing knight in armour. But when they come across a naughty knight,making mincemeat of his rivals in the tournament and losing his temper in the banqueting hall, a little magic is required to put him in his place and give everyone else the entertaining day they've come to the castle to
enjoy. Sir Wilbur is given pride of place at the banquet and everyone wants to know who the mysterious knight could be. Winnie realizes things could go badly if their true identities are revealed. They make a swift exit before out-staying their welcome, and the castle is restored to the ruin it was. With medieval magic and mayhem from the start, this story has all the hallmarks of a classic Winnie and Wilbur adventure.