Tree of immortality : A mystery or A hidden history

Once a long ago,the kingdom of life and death lived together. The people living there had their own community,their own culture and their own POWER. But they all had one thing in common.They all worshiped one deity and fought the evil. The kingdom used to marry their daughters to the other kingdom maintaining peace and power balance. They all worked together so that they could protect humanity from the evils.But one day it all changed when the evils found out about the tree of immorality . The evils attacked the kingdoms when there was a ceremony for the new born children from each kingdom. But the question was who opened the door to this world, No one could enter except for people these kingdom. This story is a story of betrayal and a mystery of the tree of immortality.