The reclusive , eccentric scientist Oscar Collins ( Jack MacGowran ) has for next-door neighbors a pop photographer ( Iain Quarrier ) and his girlfriend\/model Penny Lane ( Jane Birkin ) .
The story of the movie revolves around the reclusive , eccentric scientist Oscar Collins ( MacGowran ) , whose next-door neighbors are a pop photographer and his girlfriend\/model ( Birkin ) , named Penny Lane .