Here’s the story so far in a nutshell:
(1981)
-Cheryl, her brother Ash, and his friends go to a cabin in the woods where Cheryl becomes possessed by the Necronomicon.
-All of Ash’s friends die, along with Cheryl, and now he’s left to become a (reluctant) demon hunter.
(2015-ish)
-The Necronomicon is opened again and demons are freed, Ash, being the Chosen One, needs to save the world.
-Antics and havoc ensue.
-Ash winds back up in his hometown where he reunites with his friend Chet, (who had been secretly dating his sister at the time of her death), and they return to Ash’s childhood home as a base for their operations.
-There are demons actively stalking Ash, and when Chet goes in Cheryl’s room he unknowingly unleashes a ghost.
-Now, Cheryl is back from the dead, again.
But again, my explanations in other comments were better, and had the reference pictures I used. None of this story belongs to me, I just really love the characters.