After ending her broken marriage, the beautiful and melancholy woman Mary Ji (Rachelle Lefevre) moved into an old apartment with more than half a century of history alone. Not long after moving in, she received a strange call. The other party was a woman named Rose (Lorna Raver), who was looking for her man. Mary didn't care at first, but Rose's repeated calls made her overwhelmed, and she accidentally discovered that this might be a call that traveled through time and space. On the other end of the phone line, Rose was an unfortunate woman living in the late 1970s. The two women had a brief in-depth exchange, but Mary's joke caused Rose to kill her husband. After that, the almost confused Rose stared at Mary, who was almost collapsed, and the harassment of her ex-husband Steven (Ed Quinn) made her even more painful. Everything is developing in an unpredictable direction...