由于工作上的失误,发明家罗伯特(凯文·史派西 Kevin Spacey 饰)所发明的运动器械导致了数千人手部受伤,因此,罗伯特被判处了八年的有期徒刑,以此弥补他所犯下的过错。八年后,出狱的罗伯特并没有感觉到重获自由的欣喜,恰恰相反,当他发现前妻已经另结新欢并且霸占了房屋和财产后,愤怒和痛苦交织出现在罗伯特的心绪中。...
In a near future, crimes and accidents can be prevented by making just one phone call to the past. However, the peace of this utopian world will be disrupted by a methodical killer who seems to have discovered the only flaw in this system....