故事讲述一个迫降的外星人哈利(图代克饰)在接受了自己科罗拉多小镇医生的新身份后,本带着秘密使命来到地球的他,最终提出了人生中的重大课题:人类值得拯救吗?以及为什么他们在吃披萨之前要折叠?A crash-landed alien takes on the identity of a small-town Colorado doctor and slowly begins to wrestle with the moral dilemma of his secret mission on Earth.