見かけはさえないが、類いまれな文才を持つジョアンナ。家族を貧困から救うべくロンドンに乗り込み、辛口のロック批評家として変身。だが次第に自分を見失い...。

Pretentious critic Cornelius is writing a biography on a famous cellist and to do some research he stays in the critic's house for a few days. He doesn't manage to get an interview with the man, but by talking to all the women who live with him, he comes to learn a lot about the musician's private life none the less. Cornelius then decides to use this information to blackmail the cellist into performing a composition that he, Cornelius, has written.