Sara is a loser. She is new to Derry and is the new girl in school, which means popular is far from what she is. She is bullied by the popular girls, gangs, and even other losers like her. That all changes after she meets what others call "The Losers Club". After a rough first year in her new school, she starts to realize that something isn't right and that is causing her great fear.
When summer finally arrives she and the other Losers begin their journey of looking for Bill's younger brother, Georgie, who had gone missing that past October. As they look, drama and mystery only ensues. Another girl may try to join their club, and one Loser may catch the eye of Sara. As they become closer and closer to finding Georgie, Sara realizes that this thing that has been making her feel as if she's being watched, isn't just terrorizing her. It's terrorizing all of Derry and has been for years.