Jennie and Lisa are connected. They meet every time, fall in love every time. They are meant to be together, but destiny doesn't seem to be on their side. Jisoo and Chaeyoung step in. Their task is to make it work.

Abducted, Robbyn (Lisa) found herself inside the red room. Hands tightly tied by a rope with no memories to recall on how she ended up on this place. And then there's Ruby (Jennie), the psychopathic wife of Taehyung who possessed a sick and twisted obsession in abducting and torturing women who are involved with her husband's sexual affairs.