When Pentagon bioterror operative Roberto Diaz was sent to investigate a suspected biochemical attack, he found something far worse: a highly mutative organism capable of extinction-level destruction.

Now, after decades of festering in a forgotten sub-basement, the specimen has found its way out and is on a lethal feeding frenzy. And only Diaz knows how to stop it.

He races across the country to help two unwitting security guards - one an ex-con, the other a single mother. Over one harrowing night, the unlikely trio must figure out how to quarantine this horror again . . . before it's too late…