Raffaella, the wife of a wealthy Milanese industrialist, enjoys her holidays aboard a luxurious yacht the couple has rented. During her stay, she continuously flaunts her social status to Gennarino Carunchio, the helmsman. One day, the woman wakes up late and demands that the man take her to the mainland with a small boat to meet some friends, but the two end up shipwrecked on a deserted island, where they are overwhelmed by passion.