Honest Candidate is a comedy film that follows a politician's hilarious journey as she runs for an election. With all the lies and deceit in the political world, she decides to take a different approach and tells the truth about her past. As her campaign gains momentum, she faces numerous challenges that put her honesty to the test.

As a politician, Joo Sang-Sook (Ra Mi-Ran) attempted to run for the fourth time as a member of the nationally assembly. After visiting her grandmother, Joo Sang-Sook was unable to tell a lie. Now, Joo Sang-Sook attempts to return to the political world.