This book held my 6-year-old daughter enthralled over several bedtimes, and towards the conclusions other times upon request too.
Mio's Kingdom is a story of good versus evil. Prince Mio is the good, and Sir Kato is the bad. But at the beginning Mio isn't Mio because he was Karl Anders Nilsson living in North Street, Stockholm in Sweden, adopted by an unloving couple, and he had no friends except for Ben. Then one day he disappeared and ended up in Farawayland where he met his father the king.
There he lives in an idyllic place with beautiful nature all around, friends like Pompoo and his own horse, Miramis with the golden mane. But "there is a lot you don't know, Mio" for it has been foretold that Mio will one day fight Sir Kato.
There is a long build up at the beginning with Sir Kato being built up into a most evil entity, which worked for my daughter. She loved the passage "When he said that name (Sir Kato) the air all around us turned as cold as ice. A tall sunflower in the garden withered and died, and the butterflies lost their wings so that they could never fly again."
Other things in the book she enjoyed was some of the repetition, such as Mio always being "Mio, my son" to his father the king, and bread always being called "the bread that satisfies hunger." However for me some of the repetition sometimes meant I felt I was reading the same sentence again. I guess this was done for emphasis.
But for her it was a definite 5 out of 5.
(I got this book through Amazon Vine UK. It is listed HERE.)