This is a Childrens' book. It tells the story of Bhima, one of the princes born in a royal family, called Pandavas. He was the strongest of all men, nevertheless, he had to face many attempts on his life -and risked his life to save his family members.
He had many adventures -especially when challenged by Demons and Rakshasas( Fierce beings, many times stronger than humans). These adventures are illustrated and retold in this book.
The original story is from Mahabarath - a classic tale from Indian shores.
The author is trying to put it across to children across the world for their reading pleasure.