This story is a sequel to Ancient Bones

A being that has lived for millennia, that almost wiped out the minotaurs and ponies of the east, and has developed brand new magical languages every century to prevent the living from gaining the upper hand against him has thrown in the towel. The lich decides to follow the three ponies who had come to his artificial continent Arkom to slay him, curious as to the progress and inventions the creatures whom he once tried to turn into undead.

His childlike wonder unnerves the three who hesitantly bring him to the mainland and get him to stand trial for what he did, but he doesn't exactly cooperate. The 'new world' is a fascinating thing to one stuck in the past, leading to the lich jumping about eagerly to discover everything. The populace don't take it well.