In the London of the swinging 60's, a reclusive professor (Jack MacGowran) becomes infatuated with beautiful model Penny Lane (Jane Birkin), the girlfriend of a Svengali like photographer (Iain Quarrier), and embarks on a noble quest to become her champion.
To rescue Penny he enters the magical realm of the Wonderwall, and returns to his laboratory a transformed man.
The kaleidoscope of images and George Harrison's musical soundtrack catapult the audience into a lost world of innocence, where love and laughter reign supreme.