影片讲述了一位警官在意外撞死小孩之后如何对待自己的罪行的事件,尤其表现了他在法律与道德的界限之间犹豫挣扎的过程。 事发当天,警官谢尔盖·索博列夫开车去医院看望即将生产的妻子。由于车速过快,他撞倒了一个路边玩耍的男孩,男孩当场死亡。慌乱之间,索博列夫打电话向警局的朋友求助,于是全局上下都替他包庇罪行,造假证据,杀人灭口。随着这个案子的进展,索博列夫逐渐明白了自己的懦弱导致了许多无辜者的死亡。为了避免事件继续恶化,索博列夫试图弥补犯下的过错,然而现在挽救已为时太晚,他不得不为此与整个局势作斗争……That day Sergey Sobolev, police officer, is driving to the hospital where his wife is about to give birth to their child. High from happiness, he's driving too fast and when he sees a boy on a passage walk, it's too late. The boy died, and now the major has only two options: go to prison or conceal his crime and stay free. All the characters in this film have to choose - to cross or not to cross the line, when the price for your choice is life... yours and of the ones you love.