犯下劫钞案而展开逃亡的主谋唐尼（小奥谢拉·杰克逊 O'Shea Jackson Jr. 饰），他来到欧洲，却卷入危险的钻石窃盗案，更与恶名昭彰的黑帮“黑豹”勾搭上，以全球最大的钻石交易所为目标，策划着抢劫案。而未能成功拦截唐尼的警探尼克（杰拉德·巴特勒 Gerard Butler 饰）陷入人生低潮，一心想要复仇的他来到欧洲、找上唐尼，不过他没想到自己却也成为其他势力的追击目标，让他必须与唐尼联手，...
Detective Charlie Hudson teams up with what he calls his "highly trained law enforcement animal" German Shepherd dog named Rex who he prefers to team up with because he doesn't talk his ear ...