I’ll Marry Your Brother summary: A beautiful and successful news anchor, Yeojin's life looks perfect from the outside. But in reality, she's trapped in an unhappy marriage. Not only did her husband have an affair with her close coworker, but he also murdered her parents and stole their company. Yeojin thought her life was over, but when she opened her eyes, she found herself back on her wedding day. Watching her husband and his mistress flirt, Yeojin swears to get her revenge. She will do whatever it takes, even if she must marry her husband's older brother.