丹．艾克罗伊德无与珍．柯婷出身自美国电视综艺节目周末夜现场，如今他们再次合作，将他们在电视时代的无厘头搞笑伎俩搬上银幕，虽招致影评人的一顿痛骂，却颇受反判性强烈的美国新新人类观众欢迎，笑得前仰后合。剧情描述来自外星球的巨蛋头家族，某次出任务失败沦落地球。家族成员只好想尽各种办法溶入美国的中产社会，因而引发了不少臭事。 　　纽约时报推荐本片为最温馨有趣的喜剧,故事主要叙述一个外星人家族试着融入地球生活的故事。男主角丹艾奎洛饰演外星人家族的大家长,他幽默而带有喜感的搞笑演出,在纽约邮报获得有极佳的口碑。珍寇顿饰演艾奎洛的妻子,而麦可马金饰演移民局官员,准备毫不留情地将这些“非法移民”驱逐出境。An alien couple known as Beldar and Prymatt with cone-shaped heads from the planet called Remulak is mistakingly ditched on earth, during a scouting mission for planet conquest. While here, they dodge the INS, have a child and discover that life on Earth is quite good. But unfortunately they are being chased by the government who knows something is not quite right with the Conehead family. After they are rescued and taken back to their planet, Belder vows to return to earth and conquer it!