Sid and Bill have brewed their latest batch of Dr Sidney James' Magic Elixir, a foul health potion mimicking a concoction Bill remembers from back home in Australia. Arrested on charges including defrauding the public as soon as they open sales, Sid's got an excuse for every accusation the sergeant throws at him. But his devotion is nothing compared to that of an elderly hospitalised woman who's refusing to take anything else!