During the 1970s, Karl and Paul were best friends, creating havoc at school. When they meet again, accidentally, twenty years later, Paul does not recognize Karl who is now an attractive transsexual named Kim. She, on the other hand, has no problem recognizing her old trouble-making pal and has no desire to reveal her "true" identity to him -- she just wants to get on with her quiet, orderly new life. Paul is strangely attracted to Kim, and is shocked when he finally recognizes her. When Kim reveals that she has actually changed her sex, he freaks out. As Paul proceeds to wreck Kim's new life, the mismatched pair embark on a wild journey and end up forging a different and surprising relationship.