Count Agostino di Montecorvo's nephew and niece pretend they get married for his hundredth birthday since the old man has had this wish for a long time. But when the count wants them to beget a child as well they are forced to present him with a fake one. But then the child's mother wants it back...
Self-made businessman Sir Grant Rayburn is obsessed with making money to the exclusion of all else. He shows little interest in his daughter Jill and is irritated when she falls in love with, and wishes to marry, a young man named Tom.
Medical student Antti Ahonen, who is fighting tuberculosis, finds himself in the middle of a love triangle with his friend Heikki Huhtamäki and his crush Helmi Hirvinen.
After experimenting on himself and becoming invisible, scientist Jack Griffin, now aggressive due to the drug's effects, seeks a way to reverse the experiment at any cost.