Industrial spy and former FBI agent David ‘Mo’ Rutherford is hired by executives of the ice-cream industry to disclose the recipe of the phenomenally successful marshmallow- and yogurt-like desert called the Stuff. Somehow, its consumers become addicted in the product, and competitors want the formula. With the support of Nicole, the designer of the Stuff’s advertising campaign, and a boy named Jason, who refused to eat it after his family became consumed, Mo tries to prove that the Stuff is a malevolent and possibly sentient natural substance that is trying to take over the wills of the population of Earth.
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