Kanzaki Nao was named by her dad for "honesty", hoping she would embody this quality. And indeed, Nao went beyond his expectations, earning the moniker of "a foolishly honest girl". This makes her an unlikely fit for the 'Liar Game', a high-risk game where participants must deceive each other to win money, and risk getting in debt if they lose. However, a package containing a hundred million yen and an invitation to the game arrives at Nao's doorstep, and she falls prey to a scheme that deprives her of all the money. In a bid to win back what was stolen from her, Nao seeks the expertise of Shinichi Akiyama, a brilliant con artist who caused the bankruptcy of a major corporation. From this point on, Nao and Akiyama become enmeshed in the dark and deceptive realm of the Liar Game, driven by their desire to succeed.
