The last volume is more like a fantasy story. Human beings are finally able to see the dark side of the universe through the war against the Three-Body civilization for the first time. The earth civilization is like a terrifying child, with the campfire of seeking friends gone out, shivering in the dark night. No one has ever seen the real star war, for it is impossible to survive after seeing it. The methods and weapons of star war are unimaginable too. That is to say, the day when they really see the star war is their doom day. The peaceful era of the universe has gone forever. Back at that moment, the ultimate beauty of all creatures just flashed across. Now it has become a dream, which no brain or wise body will ever be able to have. It has become a wispy sad song of the troubadour. The cruelest moment when only the fittest survives is coming. The destructive force hidden deep inside has been awakened in the dark battlefield. The Death is coming, the outer space is doomed. But people in the solar system will never know that only two people are left to find the truth at last.