Lee Mun-hi works as a bus conductor. She is tormented by the fact that she is subject to body searches, but tries to treat her co-workers nicely and live an honest life. She is kind to people who are less fortunate than her and falls in love with Kwang-seok, a traveling salesman. She helps Kwang-seok become a crewman of the ship and promises to marry him. When she is subjected to another body search, she protests against the humiliation and jumps from the roof of her company building. She is critically injured and is embraced by Kwang-seok..