会计师卡尔文（凯文·哈特 Kevin Hart 饰）在高中时代曾是学校的体育明星，他热心张罗高中同学聚会，于是在Facebook上联系到了老同学鲍勃（道恩·强森 Dwayne Johnson 饰），他没想到这个在高中时常受欺负的老同学现在已经是CIA的职业杀手，而他也万万没想到自己将被卷入制止军事秘密泄露的任务中。
A bunch of young people are invited to a Caribbean cruise on a gangster's yacht, to distract the attention of the authorities. Unfortunately, a mutant cat which escaped from a test laboratory also gets on board, and kills most of the passengers.