The only thing that eighteen-year-old Andy Bradshaw had on her mind was that she was graduating high school in a matter of a few months. Andy has never been one of the popular girls because she makes good grades in all of her classes, reads and aspires to become a great writer. Unfortunately, she doesn't have anything to write about. Her twin brother, Riley, wants to follow a different path and become a rock guitar god. Because of this, they are almost always at odds. Andy has only a small circle of good friends which isn't anything bad to complain about. That is, until, a new and definitely different social media app pops up into everybody's phone screens. It is Hater, an app dedicated for users to only post hate comments back and forth to each other. Anyone who decides to no longer put up with any of the negativity and post a nice or positive comment mysteriously disappears. As the student body of John P. Dorset High School and the rest of the world grows more and more out of control due to the presence of Hater, it is up to Andy and her friends to stand up for themselves and come together as a team to take down this faceless threat. The only question that remains is: can Andy act quickly and take down this Internet monster before she loses everyone that she loves as they slowly disappear one by one?