The three of them search for the ancient tombs of their past lives. The constant changes bring about serious doubts. The partners actually have genetic codes from a hundred years ago in their bodies. The old village in the old mountains, the hospital and the school from a hundred years ago are indistinguishable from humans and gods, and it is difficult to distinguish between the clouds and the mist. They have many concerns, but they attract agents from the National Security Agency to follow closely. The young leaders are inseparable, and secrets dating back to the Republic of China era are gradually revealed.