2 brilliant 14-year-olds, Carl and Isobel, are the custodians of a secret; in a laboratory hidden beneath their house, a human brain is growing in which one hemisphere is pure evil, the other is entirely good. However, the evil half of the brain is gone and is running amok in a teenager's body. Ther...

2 brilliant 14-year-olds, Carl and Isobel, are the custodians of a secret; in a laboratory hidden beneath their house, a human brain is growing in which one hemisphere is pure evil, the other is entirely good. However, the evil half of the brain is gone and is running amok in a teenager's body. There is only thing that Carl and Isobel can do.