It's the return to a world of bloodthirsty zombies: Lt. Colonel Sawyer and the residents of the last survivor camp face more and more severe undead attacks.
Katja's life collapses after the death of her husband and son in a bomb attack. After a time of mourning and injustice, Katja seeks revenge.
A young genius accidentally invents a device that amplifies the paranormal activity within his family's house, possibly bringing back the spirits of loved ones, and unleashing things far worse.