Paul Conway自己设计制造了一架会思考的机器人,起名“哔哔”(BB)。哔哔善解人意讨人喜欢。万圣节晚上,Paul、Tom、Samantha及哔哔想利用遇节无禁忌的机会,闯入老处女Elvira Parker小姐的前院,没想到她不通情理朝哔哔开枪,打得粉碎,只剩下电脑晶片无损。不久感恩节来临,Paul邀Samantha共进晚餐,Samantha因此被继父打落楼梯,脑部严重撞伤送医诊断,因脑死而回天乏术。Paul得Tom相助,于Samantha脑中植入哔哔电脑微晶片,Samantha因而复活,然而完全为哔哔之思考模式,哔哔怨恨Samantha的继父和Elvira Parker小姐,展开复仇……
While driving through the desert with his wife Carol Marvin to a military base to send the eleventh rocket to the orbit of Earth for helping the exploration of the outer space in the Operation Sky Hook, Dr. Russell A. Marvin and Carol see a flying saucer and accidentally records a message in their tape recorder. Once in the base, Dr. Russell is informed by his father-in-law and general that the ten first satellites had mysteriously felt on Earth. When Dr. Russell decodes the message, he encounters the aliens that ask him to schedule a meeting with the leaders of Earth in Washington in 56 days with the intention to invade Earth without panicking the population. Dr. Russell develops an anti-magnetic weapon that becomes that last hope of human race against the hostile aliens.
Major Palgrave, an idiosyncratic but charming mystery writer, reveals to Miss Marple that one of the guests at a luxurious Caribbean resort they're staying at is a Bluebeard-type wife murderer. Unfortunately, the Major succumbs to an apparently accidental overdose of alcohol and blood pressure medication before revealing the killer's identity. When it's discovered that the medicine belonged to another guest and the revealing photograph the Major was carrying is missing, Miss Marple realizes that the serial killer has struck again and more murders will follow.