Politician Joo Sang-Sook (Ra Mi-Ran) is a member of the national assembly. She has been elected 3 times and she is now running for her 4th term. She is also a habitual liar, but, suddenly, she is unable to tell a lie.
Sang-sook is a competent politician who captivates the public with all kinds of nice words. One day, Sang-sook visits her grandmother who lives in the isolated house. But when she returns home, she finds out that she is not able to lie anymore.