In the summer of 1979, Eckert, Wisconsin, was the sight of the most unique UFO encounter in history. A young couple observed a saucer-like aircraft hovering over HollersHill. A blue beam blasted down from the center of the craft into the hill and caused the ground to rumble for miles.

Now, thirty years later, Eckert is experiencing nightly rumbles that stir up wild rumors and garner outside attention. The earthly tremors are being blamed on everything from earthquakes to underground earth dwellers.

Two pre-teens discover a pipe out behind Packard's Flea Market uprooted by the "booms" and come into contact with the powerful ooze bubbling from within.

What begins as curiosity will end in an afternoon of unbridled terror for the entire town.