Thirteen-year-old Cameron Kelsey is dying of heart disease, and time is running out to get a transplant. In desperation, his father approached transgenic doctor Richard Bryce, who is trying to conduct research with pig hearts. To Cameron's mother's chagrin, Dr Bryce agrees to perform the operation on Cameron, although it has never been done before. His parents are called Cathy and John. Cameron is sworn to secrecy about the nature of the transplant, but he secretly tells his best friend Marlon. Meanwhile, his mother announces that she is pregnant, and a delighted Cameron begins to make videos for his unborn sibling, in case he dies during the operation. The operation eventually goes ahead and is successful, but Cameron is furious when he discovers that Marlon has told the newspapers about the pig heart. Cameron is let out of hospital, but he is now famous and his family are constantly bothered by the media. Even worse, the girl Cameron likes doesn't want to be near him anymore, and some animal rights protesters threaten him and his family.