Kanzaki Nao is an awfully honest girl who got randomly chosen as a participant in the Liar Game, of course as the name implies, a game where you lie to win. During the first round of the game, her opponent was her favorite school teacher but she ended up being deceived. Not knowing what to do, she sought the help of Akiyama Shinichi, an ex-convict who recently been released in prison. Akiyama was reluctant at first but decided to help her eventually. He helped Kanzaki win the game but instead of claiming the prize money, Kanzaki gave everything to her opponent. When she thought the game was over, she was forced to move on to the second round. Akiyama joins in as he wants to unveil the real reason behind the Liar Game.
