As others have said, it's men doing cosplay walking in the forest. The occasional flash-back to the men's past lives and misdeeds do nothing to bring any dimension to the characters. The acting isn't bad (if a bit flat)...they just had nothing to act with.
The end spoiler is that the sickly individual they meet in the forest is indeed the eponymous necromancer. It's just too awful to actually watch while the necromancer costume is laughable.