Inspiration:
So the idea is inspired by Red Velvet Peekaboo MV.

So there are 5 girls whose death are somehow connected to pizza. Because
there are no other cases of death like this before, God decided to put their spirit inside a house that is abandoned for ever. And that house is the first pizza food place in town. Before they go to heaven, they have to complete their missions before their time is up without going outside of that house