"The Selection Series" is a young adult dystopian romance written by Kiera Cass. The story is set in a future where society is divided into castes, and it follows America Singer, a girl from a lower caste who enters a competition to win the heart of Prince Maxon. The series explores themes of love, identity, and social class. The series consists of five main books, starting with "The Selection," followed by "The Elite," "The One," "The Heir," and "The Crown." Each book delves deeper into the challenges faced by America and the other contestants, as they navigate romance and political intrigue in a royal setting.