麥克（史提夫馬丁飾）是個聞名的神經外科醫生，他曾發明多種怪異的外科手術方法。他在一次手術中挽救了桃樂絲（凱瑟琳透娜飾）的生命，並且與她結了婚。 但麥克很快就發現桃樂絲是為了錢而嫁給他，婚姻不美滿的他因而悶悶不樂，他沈浸逃避到手術與實驗的世界中，並且愛上了一顆放在玻璃瓶裡的腦袋。 他與妻子接著來到威尼斯出遊，因此捲入電梯殺人狂的案件中，同時，麥克也遇上了一名精通腦部移植手術的怪異外科醫生，異想天開的他為了一圓夢想，竟然決定將他愛上的這個人腦，移植到妻子的身體上....！
University professor George Kingsley is struck by gangsters while crossing the street, leaving him with brain damage and one of the gangsters, Cannon, paralyzed. Kingsley's friend Dr. Sovac attends to both men, and when Cannon offers him a reward for aiding his recovery, Kovac transplants part of Cannon's brain into the dying Kingsley's skull, creating a dual personality.
In 19th century England, a noted brain surgeon rescues a former student from being hanged on a false conviction for murder, and spirits him away to an ancient, repurposed abbey far in the countryside. There, he connives his pupil into assisting him in mapping the functions of the various parts of the human brain, using living subjects who are under a terrible animation-suspending drug called "black sleep". Subsequently, the student, along with the daughter of one of the subjects, discover that most of these subjects have survived but are being kept in a dungeon-like cellar, in various stages of physical and mental derangement...
An American doctor gets caught in the middle of a revolution when he's forced to operate on a South American dictator.
A young wife wants to have children, but her husband neglects her. She confides her longings to a handsome brain surgeon. Complications ensue.
We follow neurosurgeons Clemens Dirven and Arnoud Vincent of the Erasmus MC in Rotterdam in this documentary during the treatment of three patients with a brain tumor.