Lee Gang-sik sits in jail with a life sentence because of murder. His good behavior the last 15 years earns him the opportunity to be released for one day & visit his family. But how will his son, whom he let down for 15 years, react?

Kang-sik, who is sentenced to a lifetime imprisonment, leads an empty life of hopelessness. One day, something miraculous happens: He is granted a single day to leave, to see his son that he has not seen for 15 years. Now as he prepares himself to meet his son for one day, the feeling of elation and joy overfills his heart. At the same time, he is overwhelmed with anxiety and fear.—CJ Entertainment