Geum Byeol and Eun Byeol are twin sisters and have had a bad sibling relationship since they were little girls. Geum Byeol was treated like a princess by their mother while Eun Byeol was neglected and forced to give in to her sister all the time. The sisters had a long, tempestuous relationship but this conflict between them should have ended when they got married. Instead, their marriages took their sibling rivalry
