With the burning fire of revenge to make her family and Ex-husband suffer, Kim Jisoo's life has changed. Finding herself in a new life- she isn't married to her husband, instead, she's married to the person who will help her in her revenge. Park Chaeyoung, the successful professor, is Jisoo's new partner. Jisoo plans to get her revenge, using Chaeyoung or not, she won't stop until it's done. With time ticking, Jisoo needs to complete her vow before it's over...but what if she doesn't want to leave Chaeyoung behind?