Una asesina en serie que vive en el pasado intercambia llamadas con una mujer que vive 20 años en el futuro e intenta cambiar su destino cueste lo que cueste.

Cheol Soo has a perfect appearance, but he is a bit slow. One day, his daughter Saet Byeol appears in front of him. Saet Byeol has been sick and she has been in the hospital. They start on a trip.