翘臀小姐姐为你宽衣解带

一个害羞的大学生和他鲁莽的室友开始了一个简单的任务去拿披萨，但在服用了一剂奇怪的令人心智的实验药物后，他们陷入了一个混乱的夜晚，荒谬的遭遇、疯狂的幻觉和意外的启示，这些启示可能会永远改变他们的生活。

2025年，在鹿儿岛县与冲绳县，搭载着配备手术室的特种车辆的渡轮已开始进行试运行。赴任的喜多见与夏梅在离岛从事医疗工作。某日，鹿儿岛县的诹访之濑岛发生火山喷发，为营救岛民，他们毅然挑战这项九死一生的任务。

　　Shipwreck survivors are found on Beiru Island (Infanto tô), which was previously used for atomic tests. The interior is amazingly free of radiation effects, and they believe that they were protected by a special juice that was given to them by the island's residents. A joint expedition of Rolisican and Japanese scientists explores Beiru and discovers many curious things, including two women only one foot (30 centimeters) high. Unscrupulous expedition leader Clark Nelson abducts the women and puts them in a vaudeville show. But their sweet singing contains a telepathic cry for help to Mothra, a gigantic moth that is worshiped as a deity by the island people. The giant monster heeds the call of the women and heads to Tokyo, wreaking destruction in its path.

　　狱中5个素不相识的人成了好兄弟——五福星。茶壶（洪金宝 饰）、死气喉（吴耀汉 饰）、卷毛积（岑建勋 饰）、凡士林（秦祥林 饰）和鲁奇（冯淬帆 饰）五人皆因小偷小摸或跑龙套成了冤大头，他们决心出狱后重新做人，光明正大挣钱。五人同一天出狱了，出狱后他们合股成立了一间清洁公司 ，专门帮公司或家居进行清洁。　　一天，黑帮在交易制贩假炒的电版时，被当地一个愣警察撞见了。慌乱之下，他们将电版藏进了五福星的清洁车的清洁箱内。毫不知情的五福星就这样又无端卷入了江湖是非中：一方面，警察怀疑他们是黑帮同伙，在四处通缉他们；另一方面，黑帮也在追寻他们，想杀人灭口取回电版。五福星在进退两难的境地如何运用他们的奇谋妙计脱险？