The Honest Candidate is a Mexican political comedy about Tonatiuh Pérez Preito, a corrupt politician running for president. After being cursed by his grandmother, Tonatiuh finds himself unable to lie and starts telling the truth about everything, leading to humorous but revealing situations. As his campaign progresses, his honest and often uncomfortable comments about corruption, politics, and his personal life earn him both followers and detractors. The film explores themes of ethics, corruption, and the nature of politics in Mexico, all with a humorous and satirical tone.