A heartless mobster, JANG Se-chool, chooses to be a "good person" after meeting the slender female attorney So-hyun at the redevelopment protest site. One day, he unexpectedly saves victims from a bus crash, becomes an instant hero in the city, and even runs for the National Assembly. His luckiest opportunity to be a "really nice person" will not arrive until the competitor candidate Choi conspires with Se-hostile chool's clan leader Gwang-chul.