"Percy Jackson & the Olympians" is a pentalogy of adventure and fantasy fiction books authored by Rick Riordan. Set in the United States, the books are predominantly based on Greek mythology and deal with a demigod, Percy Jackson, and his quest to stop the rise of the Titan lord Kronos. All 5 books are seen from Percy's witty and sardonic point of view. The series tackles themes like coming of age, love and teenage angst.