Zoella's curse of the dead (HxH Emerald Bounty)

After the attack on the Village and finding most of the Greyson/GodsLand siblings Emerald Bounty is preparing for the next attack from the Outcast demons.

Zoella finds some interesting information and a way to bring Lady Amethyst back by bringing her an undead army of her zombies, but she also needs the purest vessel to sacrifice and someone in Chotans home village intrigues her to use.

Chotans anniversary with his deceased wife is coming up, is he seeing things or is she right in-front of him?

Zoella releasing a whole apocalypse upon the world in order to grow her undead army for Lady Amethyst, trying to capture her vessel who is on the run.

Emerald Bounty finds this so called vessel and has to protect her and the world from the undead hordes threatening to destroy everyone.

The BloodMoon rapidly appears every now and then, the sun isn't rising anytime soon, and Yukimo knows only two people who can help, but has no idea who they are.

Will Zoella's be able to complete her ritual and bring Lady Amethyst back?
Can Emerald Bounty stop her and save the world from this undead curse?
Can Yukimo find the people to bring back the sun and stop these overpowering Bloodmoons that power up the zombies?
And will the Vessel sacrifice herself to bring Lady Amethyst back? Or will she fight against Zoella the one who brought her back?