In the middle of a fierce commercial competition between three caramel companies, an executive builds up a ditsy teenage girl as a mascot while simultaneously trying to uncover the rival companies' plans.
After escaping from an insane asylum, a medical student assumes the identity of a mysterious dead man, who appeared to be his doppelganger, and gets lured to a sinister island ruled by a mad scientist and his malformed men.
When Sokichi stops providing his long-time lover Kikuyo enough money to pay for the care of their three young children, Kikuyo leaves the children with Sokichi - and his very surprised and angry wife Oume - and disappears.
Ishun is a wealthy, but unsympathetic, master printer who has wrongly accused his wife and best employee of being lovers. To escape punishment, the accused run away together, but Ishun is certain to be ruined if word gets out.