IMDb describes it like this:
When a young couple inherit a farm, they are determined to turn it into a success, but strange supernatural forces soon intervene, threatening their marriage and their lives.What IMDb leaves out is that it takes place in the late nineteenth century, the husband is employed in the new field of psychology and is dealing with grief over the death of his mother and, more significantly, his son. I'm going to leave out an important plot feature too because it would ruin the surprise.
If you like the opening music as much as I did The Insects put out a FREE compilation of their music from the show that you can listen to on SoundCloud. Howlin' Lord provided vocals on several of the songs. According to The Insects, the opening song A Lyke Wake Dirge "has pagan pre-Christian origins and tells of the soul's travels on its way from earth to purgatory."
I can't recommend this show enough. If you time it right, you can watch episode five on Halloween (All Hallow's Eve in the show). It's super spooky!