- A company that produces a toxic chemical tries to improve its image via a popular spokesperson, Ricky Coogan. Ricky travels to South America to get a first-hand look at the chemical's effects and finds himself at a mutant freak farm. Elijah, who runs the farm, is only too happy to have new subjects on which to try his freak machine. The very chemical that Ricky is supposed to promote is the one responsible for creating the great variety of freaks.
- 契若夫（鲍里斯·奇尔阔夫 Boris Chirkov 饰）、拉宾（亚历山大·巴希罗夫 Aleksandr Bashirov 饰）和涅斯特拉托夫（瓦西里·梅尔库里耶夫 Vasili Merkuryev 饰）是青梅竹马的玩伴，三人之间感情非常的要好。长大成人之后，三人走上了不同的道路，契若夫成为了著名的外科医生，拉宾成为了畜牧业专家，而涅斯特拉托夫是三人里最有出息的一个，成为了建筑事业管理局的领导。 契若夫和拉宾一直想要完成他们童年时代许下的心愿——沿着河流旅行，他们好不容易才联系上了高高在上的涅斯特拉托夫，可当两人将涅斯特拉托夫带到他们的载具——一张看起来随时都会散架的木筏前时，涅斯特拉托夫震惊了！
