年青作家拖马斯在某次与女友发生争执后愤然离家，孰料他的车竟撞上一个小孩，小孩当场死亡。意外让拖马斯的人生发生了天翻地覆的改变，他努力接受现实继续生活，却无法摆脱事故给他带来的冲击与创伤……While driving aimlessly after a quarrel with his girlfriend, a writer accidentally runs over and kills a child. The accident and its aftermath deeply traumatizes him. Over the next 12 years, he struggles to make sense of what happened and continue on with life, but when he looks in the mirror, he sees a murderer.