By (author)  Angel Cheng
 
Johnnie and Friends are embarking on another adventurous journey exploring the site of a hill-top kingdom. It has been rumoured that the castle at the top of a huge rock was once the site of a small kingdom. The party goes up to the top of the rock and explores the castle and many secret tunnels. The story is full of surprises and excitements, good for both primary and junior secondary school students.