Chen Wei (Yin Xin) and her husband (Lin Caijie) moved into the Butterfly Building, known as the suicide destination, to avoid domestic violence, strange things happened frequently.Administrator Liang Bo (played by Feng Suifan) and Miaogongshan Uncle (played by Cai Zhennan) on the top floor constantly reminded her that this floor is not clean, and if she has the ability, she should move out as soon as possible, but she is financially struggling to live here for the time being.All kinds of neighbors from all walks of life, autistic boy Adi (played by Bai Runyin), who has yin and yang eyes, and the room No. 613 that was repeatedly told to be prohibited from approaching, all made Chen Wei feel strange and inexplicably.Xiao Liang (played by Cao Youning), a sunny agent, takes good care of the independent and strong Chen Wei, and often comes to the door to help repair home appliances. Chen Wei’s daughter will rarely smile when she sees him.Just as the Ghost Gate was open, accidents were frequent in the Butterfly Building, and many supernatural events even occurred, but the old residents seemed to have become accustomed to it.Chen Wei originally wanted to take her daughter to escape from her husband, but unexpectedly she was involved in a bigger crisis...