Sierra (Shannon Purser) is an ordinary high school girl. She has no beautiful appearance and no overly smart mind. She is the kind of girl who can never be found again if she is thrown into a crowd. One day, Sierra accidentally met a man named Jamie (Noah Centineo) on the Internet, and the two chatted back and forth. What excited Sierra was that Jamie was a handsome guy, but Jamie seemed to mistake Sierra for Veronica (Kristine Froseth), a popular figure in the school. Across the Internet, no one knows what kind of person is sitting opposite. Sierra decided to make a mistake and borrowed Veronica's identity to continue to associate with Jamie, until one day, Jamie hoped to video chat with Sierra, and Sierra, who found that the lie could no longer be maintained, could only choose to tell a bigger lie.