Since the beginning of time, an unknown life form has been trapped inside every single human cell. Nature blocked it, denied its growth, denied its life.
Now, in a small lab, two scientists have stumbled upon this odd anomaly. One scientist believes this is what human life should have evolved into, and normal human life was a mistake.
The scientist's colleague, greedy, set on self gain, allows the oddity to be cut loose. This sets off a string of events allowing the living infestation to ravage life as we know it, taking revenge on humankind for being locked inside a cell for eons.
Set in current-day Orlando, Florida, before the long Fourth of July weekend, the Evolution of the Dead begins.