弗兰奇（艾德里安·布洛迪 饰）刚刚结束为期十年的漫长牢狱之灾，然而，艰苦的铁窗生活却并没有改变他暴戾邪恶的性格，刚刚出狱没多久，他便开始筹划着干一笔大买卖，以此作为收官之战。

Mavka is a dangerous nymph of the forest lake that lure people into its depths for the mermaids to feed on their energy. When she meets Lukian, a biology whizz, Mavka falls in love disrupting the natural order.