A mysterious, delicious substance is discovered oozing from the ground by a group of miners. Packaged and marketed as "The Stuff," it quickly becomes a nationwide craze. However, when people who consume The Stuff begin exhibiting strange and dangerous behavior, an industrial saboteur named David "Mo" Rutherford is hired by ice cream company executives to investigate the phenomenon. Teaming up with advertising executive Nicole and a young boy named Jason, who has seen the harmful effects of The Stuff, Mo embarks on a mission to uncover the secrets behind the product and its mind-controlling properties.

As Mo delves deeper into the origins and ingredients of The Stuff, he uncovers a conspiracy that goes far beyond mere profit margins. The substance appears to be a sentient, parasitic organism that takes over the consumer's mind and body. With corporate interests trying to silence anyone threatening their lucrative venture, Mo and his allies must navigate dangerous encounters, public skepticism, and corruption. Their quest for the truth leads them to confront the insidious nature of The Stuff and its creators' true intentions. Mo's investigation becomes a race against time to save themselves and others from the horrifying effects of mass consumption.