by Christopher Paolini
The main characters, Eragon and his dragon Saphira, go off to an Elven city to train and get better at fighting since they were easily defeated by Eragon's half brother in the previous book. There they train with an older Rider and dragon. After their training, both sets of riders and dragons plan to attack the empire. While this is going on, Eragon's cousin is helping a group of rebels known as The Varden. They all meet up while attacking a city that the empire controls.
Brisingr is the third book out of 4 books
This book is set in a land called Alegasia. This land is like the classic lands that you think of when you think of dragons, magic, and fantasy