What? I turned my mom into a dinosaur!

The book is about a stone which enables people to have the power to turn someone into a dinosaur. A boy fulfilled his dream and had his freedom with a price to pay - his nagging mom was turned into a dinosaur! 

When he was determined to do something to turn his mom back to be normal, the bad guy took away the dinosaur stone while anyone with blood descendant shall turned into dinosaurs eventually. ...