In a high school setting, Paris, a popular girl, is threatened by the arrival of a new student, Juliana. Paris's jealousy leads her to undermine Juliana, while Juliana tries to make friends. As the school year progresses, Juliana decides to throw a birthday party, hoping to connect with her classmates. Paris, feeling insecure about her popularity, throws a competing party on the same night. Tensions rise as rumors swirl and social dynamics shift.

During science class, a lab experiment brings Juliana and Trevor, a popular boy, closer together, which angers Paris. Despite her efforts to sabotage Juliana, Trevor ultimately chooses to support Juliana. On the night of the parties, Juliana's celebration initially seems to be a flop, but it picks up when Trevor arrives, declaring he prefers her company over Paris's. Meanwhile, the girls face mishaps on their way to the Latin Music Awards, further complicating the situation.

In the end, despite the rivalry and misunderstandings, Juliana's birthday becomes a success, highlighting themes of friendship, acceptance, and the importance of being true to oneself amidst social pressures.