The movie follows the lives of 18 widows, each with their own story of loss and hardship. After their husbands' untimely deaths, they are left with nothing but debt and a sense of injustice. As they navigate the complexities of the Korean social security system, they realize that they are not alone in their struggles. United by their grief and determination, the widows form a secret organization, determined to take down the corrupt system that has wronged them.