When a truly terrifying sound wakes the inhabitants of the fairytale kingdom, the clever Princess Daisy soon figures out the problem but her father the King just won't listen to her. After all, what can a princess do? But when the knights who come to the rescue prove to be a big bunch of nincompoop scaredy-cats, things start to look rather bad. But what's this? Riding a cow and armed with a book rather than a sword, a fourth mystery knight dares to enter the dragon's den. Whoever can it be? Why it's Plucky Princess Daisy... of course!