吴老板是一名借运送动物为名将大批重度污染废水运送到公海处理赚取佣金的倒爷，长期的非法倾倒导致生活在附近的海洋生物产生变异且极具攻击性。林浩东为了弥补患有假性自闭症的女儿，带她登上了豪华邮轮“平安号”。出海的过程中，邮轮遭受海底巨蛇突袭，在这场灾难面前，林浩东与众人开启了一场惊险刺激的求生之战。
A clever fortune-hunter with a penchant for murder does in his elderly, supposedly rich, wife and manages to get away with it. After an investigation results in a decision of 'accidental death', our crafty killer discovers that his late wife's 'fortune' is not what he thought it was. Driven to find another unsuspecting spouse; he discovers that his new bride, a widow, is no fool. When she tells him that she intends to keep her accounts separate from his, he is driven to contemplate murder once again
