Kevin Shepard has gotten away with lying his entire life, but when video-game executive Larry Wolf (Barry Bostwick) steals his idea for a hot new video game, the tables get turned. He realizes that he has met his match, a Bigger Fatter Liar, when Larry refuses to admit the truth. He declares "GAME ON" as he and his best friend Becca, stop at nothing to get Larry to do so, plotting a series of devious pranks to set the record straight.