As of my last knowledge update in October 2021, "Uglies" is based on a popular young adult dystopian novel series by Scott Westerfeld. The storyline revolves around a society that enforces extreme beauty standards through a surgical procedure that takes place when citizens turn sixteen. In this world, everyone undergoes the operation to become "Pretty," which is seen as a rite of passage and a way to conform to societal norms.
The protagonist, Tally Youngblood, is an "Uglies" who looks forward to her transformation into a "Pretty." However, her perspective begins to change after she meets another girl named Shay, who is resistant to the surgery and has ideals about individuality and beauty that challenge the status quo. When Shay goes missing, Tally is faced with a choice: to betray her friend and undergo the surgery or to embrace her true self and escape her society's expectations.
The series explores themes of identity, autonomy, the consequences of conformity, and the nature of beauty. It raises questions about societal pressures and the personal choices we make in the face of them. If the film adaptation has been released since my last update or if there have been any significant changes, I recommend checking the latest reviews or summaries for the most up-to-date information on the film's storyline.