Cora is set decades into the future, after a deadly mist has covered earth, effectively wiping out most of humanity. Now, we follow Cora, a woman working for an organization trying to reverse the effects of the apocalypse.

Ida and Albin are a happy couple. They set off to a cabin in the vast Swedish woodlands to have a fun holiday with their friends. But under the floorboards is an evil that waits to be unleashed.