Newlyweds Sun Young and Jae Min decide to let Hae Sook, a neighbor fleeing her abusive husband, stay for one night. Hae Sook continues to act in ways that disturb Sun Young. After several days, when Hae Sook shows no signs of leaving, Sun Young rebukes her and sends her back to her husband. That night, Sun Young wakes up from a nightmare and hears Hae Sook's screams from outside, prompting her to leave the house to find her.