In a small mining town, an environmental disaster triggers an epidemic of eternal sleep. As residents succumb one by one, they are plagued by terrifying visions. Anna, whose children have already fallen into a coma, fights desperately to stay awake, teetering on the edge of madness.
Reality blurs with hallucinations where her deceased husband leads an army of mutant rat-people. The finale reveals a horrifying truth: Anna is the key subject of a cruel laboratory experiment. She must find a weapon against the monsters within the dreamscape before she falls asleep forever.