Young-min and Mi-young graduated from the same college and fell in love. They finally got married. As time goes by, they bicker over even the tiniest of issues. One day, at a coffee shop, Mi-young waits for Young-min and meets her ex-boss. Young-min sees them together and jumps to the conclusion that he is her ex-boyfriend. When Mi-young goes to visit her parents, Young-min tempts another woman.