Divergent, the debut novel of American novelist Veronica Roth, was published by HarperCollins Children's Books in 2011. The novel is the first in the Divergent series, a trilogy of young adult dystopian novels (plus a book of short stories) set in a post-apocalyptic version of Chicago. The society defines its citizens by their social and personality-related affiliation with one of five factions. This rigid system has removed the threat of anyone exercising independent will and re-threatening the population's safety. In the story, Beatrice Prior joins the ranks of the Dauntless and explores her new identity as "Tris". Underlying the action- and dystopian-focused main plot is a romantic subplot between Tris and "Four", one of her instructors in the Dauntless faction. The novel has been compared to other dystopian young adult books of the 21st century such as The Hunger Games (2008) and The Maze Runner (2009) because of its similar themes and target audience. In particular, the novel explores themes common to young adult fiction such as adult authority and the transition from childhood to maturity. Motifs considered within the post-apocalyptic society include the place of violence and social structure. Its major plot device, the division of society into personality types, is one used in other science fiction works. Beyond its literary context, Roth's open declaration of her religion as a Christian has brought commentary from Christian communities both endorsing and challenging the novel. Roth wrote Divergent while working on a creative writing degree at Northwestern University, and it was quickly purchased for publication alongside the subsequent books in the trilogy (published 2012 and 2013). Summit Entertainment purchased the media rights to the book in 2011 and subsequently produced a film adaptation, released March 21, 2014. The film generated nearly $290 million at the box office on a $88 million budget, but received mixed reviews from critics. Source: Wikipedia (en)