Four men and a woman are reduced to a microscopic fraction of their original size, sent in a miniaturized atomic sub through a dying man's carotid artery. Passing through the heart, entering the inner ear where even the slightest sound would destroy them, battling relentlessly into the cranium. Their objective... to reach a blood clot and destroy it with the piercing rays of a laser. At stake... the fate of the entire world.
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