基于真实故事的改编:纳粹追捕者Serge和Beate Klarsfeld花费了12年的时间追踪盖世太保Klaus Barbie,他一直采用假名流亡在拉丁美洲。经过12年的调查,成功抓获,并移送法办。Based on the true story of the Klarsfelds, a Franco-German couple who devoted themselves to bringing Nazi war criminals to justice. Their pursuit of Klaus Barbie, the "Butcher of Lyon," takes them to South America, where he has found refuge. After 12 years of investigations, undercover work and battles with authorities, they succeed in having him captured and brought to justice.