Documentary filmmaker Da-hae (Song Hye-kyo) loses her fiancé by a hit and run accident on her birthday. But she forgives the criminal who was a 15-year-old boy based on her belief as a Catholic and signs a petition for him to revoke the juvenile's death penalty. One year later, Da-hae is commissioned by the Catholic Church to make a documentary on the inhumanity of capital punishment. However, her moral convictions and desire to be compassionate are seriously questioned when she finds out that the teenage driver killed a classmate, not long after his reprieve.