Liar, Liar, Vampire (2015) Plot Summary Explained

When he transfers to a new school from Australia, Davis is concerned about the same things that most teenagers are, such as fitting in and finding new friends. However, soon after he arrives, the most popular girl in school, Caitlyn, mistakenly identifies him as a vampire – something that turns Davis into an almost instant celebrity. Not wanting to lose out on his new popularity, Davis persuades his next-door neighbor Vi into helping him continue the charade. As time goes on, Davis forms a close friendship with Caitlyn and Vi, though this stirs jealousy from the football team that are lead by Caitlyn's boyfriend Bon.

After prom, Vi overhears Caitlyn discussing with her friends and camera team about how they are planning to have Davis turn Caitlyn into a vampire and stream it live. Vi tried to warn Davis, but he refuses to believe her, accusing Vi of being jealous of his growing popularity.

On the night of the "Turning", Davis attempts to make it seem real by using ketchup, but the ruse gets exposed by Bon, and Davis gets outcasted at school for being a liar. Wanting to help Davis, Caitlyn's cameraman Ashton gives him behind-the-scenes footage of her true colors, including how she was only using Davis' act to boost her own image.

During a Halloween festival, Davis and Ashton plan to expose Caitlyn, but not before Davis meets with Vi and apologizes to her for not listening, stating that she was the only one who saw him for who he is. The footage is exposed to the crowd during a video presentation, and everyone, including Bon, turns on Caitlyn. Remembering how he too got ostracized once his lie came to light, Davis defends Caitlyn, explaining that her behavior is only how she suppresses her own insecurities, especially since high school can be tough on everyone.

Afterwards, Davis approaches Vi, and the two share a kiss, while Caitlyn makes amends with her only real friend Bethany.