Cady Heron, a new student at North Shore High School, befriends a group of popular girls called "The Plastics." As she gets closer to them, she learns about the social hierarchy of high school and the dangers of gossip and backstabbing. Cady soon finds herself caught up in a web of lies and deceit, leading to a series of misunderstandings and betrayals. With the help of her true friends, Cady must navigate the treacherous world of teenage drama and find a way to stay true to herself. In the end, she learns valuable lessons about friendship, loyalty, and the importance of being kind to others.