Kim Seo Jin is a man who is driven only to achieve success in his life. Thanks to his efforts, he is the youngest executive at his company. His life is perfect, with his beautiful violinist wife Kang Hyun Chae and a daughter. His wonderful life comes to a halt when his young daughter is kidnapped. He falls deep into despair. To change the past, when his daughter was kidnapped, he contacts Han Ae Ri approximately one month in the past. Han Ae Ri has busy days with her studies and working a part-time job to make enough money to pay for her sick mother's operation. One day, her mother suddenly goes missing. Han Ae Ri falls into despair, when Kim Seo Jin from the future contacts her.
This drama is about a man who is in shock of losing his daughter and a woman who lives in the past, struggling to save the ones they love.Kim Seo Jin (Shin Sung Rok) is a very successful man with a great job and great family with his wife, violinist Kang Hyun Chae (Nam Gyu Ri) and daughter. But one day his daughter is kidnapped. To change the fate of his daughter he contacts Han Ae Ri (Lee Se Young) one month in the past. Ae Ri is a hardworking women whose mother goes missing. She then is contacted by Seo Jin from the future.