What is the exposition of vampire academy?

In "Vampire Academy," the exposition introduces the world where two kinds of vampires exist - the Moroi, mortal vampires who wield magic, and the Strigoi, immortal and evil vampires. The story follows Rose Hathaway, a Dhampir guardian in training, as she protects her best friend, Lissa Dragomir, a Moroi princess, from the dangers they face at St. Vladimir's Academy. Through their bond and struggles, the foundations of loyalty, friendship, and the challenges of their vampire society are established.