Book 10 begins at the base of the Ring Peninsula, somewhere under the rainbow. This part of the island has very exotic animals normally found in the southeast Asian Archipelago which is comprised of a very large number of islands found in Indonesia, Philippines, Taiwan, Malaysia and many others. At first glance, the children believe this may be their new home. However, there are warnings of an eventual dangerous problem - a mysterious shadow with an evil dark heart and possessing a cruel power. This dreadful heartless horrid beast is nothing less than uncategorically diabolical.