凡尔杜师长（查理·卓别林 Charles Chaplin 饰）已经是一位银行的人员，跟妃耦莫纳（Mady Correll 饰）和儿子皮特（Allison Roddan 饰）一同过着安静可是侥幸的生存。经济大冷落的到来令凡尔杜师长掉了事情，有一个家庭要养活的他漂流在街头无处收留身，尽看之情溢于言表。　　一次有时中，凡尔杜师长获取了一种神奇的毒药，它可以杀人于无形…

The monster, which looks like a nastier version of The Creature from the Black Lagoon, invades a sleepy lighthouse town. The superstitious lighthouse keeper is worried for the safety of his beautiful teenage daughter, so he leaves food for the monster, who dwells in a nearby cave. When bodies wash up ashore, the locals…