April 4, 2444 A.D., 8 a.m., New York, Earth Federation Empire Combined Fleet Command of Land, Sea, and Air Forces.

A large number of high-ranking dignitaries and dignitaries, including the President of the Federal Empire, Christopher the American, the Chief of the Imperial General Staff, the Russian Korygin, and the Speaker of the Parliament, Mrs. Sivani of India, sat around the oval-shaped giant conference table. The room was breezy and the air was pleasant, but the people sitting around were haggard and their eyes were full of anxiety.

In the 25th century, the earth has been extremely powerful after several explosions of science and technology. The moon has long become a satellite city of the earth, not only inhabited by a large number of earth space immigrants, but also the base of the earth's space interstellar aviation warships. Thirty-six huge space cities surround the earth, which not only diverts a large number of the earth's population, but also constitutes a powerful outer three-dimensional protection system of the earth. The interstellar aviation warships of the Earth Empire's main battle have reached faster-than-light speeds and are equipped with lasers, protons and other weapons, which can easily destroy all enemies with bad intentions. The new high-tech crystal casing and laser shield provide strong protection against space meteorites and cosmic rays. Advanced communication and detection technologies make it possible for starshipships and spacecraft to avoid cosmic black holes and other unknown dangers.

At the same time, due to the great extension of human life expectancy and the exponential growth of the global population, human beings are already facing huge pressure on the survival of population and resources, resulting in a serious crisis of human survival. And the best way to avoid the existential crisis of mankind is to migrate to outer space, and the expansion and conquest of the earth into the universe is inevitable.

Humanity's interest in the unknown is endless, from land to sea, from ocean to space, and from space to the universe. Mankind has never stopped the journey to find a second Earth, and NASA launched the "Kepler Program" as early as 2007 to launch a space telescope into space specifically to find a second Earth.

With the unremitting efforts of human beings and the continuous improvement of detection technology, thousands of terrestrial planets have peeled off the veil of mystery. In September 2010, mankind discovered a diamond planet, which is a white dwarf star, about 50 light years away from the earth, its diameter is 4,000 kilometers, and the sphere itself is a huge diamond, which is more than eight times the weight of the earth! Just thinking about it can arouse people's crazy desires and impulses.

Since the beginning of the 24th century, human beings have carried out rudimentary exploration and development of some planets near the earth, and have reaped great rewards. However, the exploration and development of space is a double-edged sword. As science fiction writer Liu Cixin mentioned in the novel "The Three-Body Problem" in the "Law of the Dark Forest": "The universe is a dark forest, and every civilization is a hunter with a gun, sneaking through the forest like a ghost, gently brushing away the branches that block the way, trying not to make a sound from his footsteps, and even breathing must be careful: he must be careful, because there are hunters who sneak like him everywhere in the forest, and if he finds another life, there is only one thing he can do: shoot and destroy it." In this forest, others are hell, eternal threats, and any life that exposes its existence will be quickly wiped out......" That is, in the exploration and development of the universe, what kind of situation will occur when the interests of one civilization collide with another? Will the two live in peace and develop the universe together, will they burn and loot the Indians as they did when the European colonists first discovered them, or will the two sides fight to the death and then destroy them at the same time? Soon, the cruel answer was in front of the earthlings.

In 2421 A.D., just after the New Year, an exciting news came from the spacecraft Explorer. In the distant interstellar world, a black planet was discovered, and on this newly discovered planet, there were a large number of obvious signs of life activity. The information sent back to Earth by the Probe has been assessed by the Imperial Academy of Sciences that the level of civilization of life on the Black Planet is by no means lower than that of Earth's civilization. When the news came, there was jubilation on the earth, and mankind had finally found a similar "friend" in space. However, bad news followed, first of all, the destruction of the Exploration Spacecraft, which is a small spacecraft with the latest technology on Earth, 100% intelligent, and faster than the speed of light. It's small, agile and extremely manoeuvrable. Especially its terrifying protection system, even an indestructible laser weapon requires more than three direct attacks to break through. To destroy such a modern spaceship is almost inconceivable in theory. The bad news is not only that, the signal sent back to Earth by the probe has been tracked, and the Earth has been firmly locked by the black ball. Tracking the signal first, then locking on to the target, and finally destroying the spaceship, the newly discovered "friend" of the Earth Empire in space is not only powerful, but also cunning, and even more suspicious.

Hopefully it was a mistake, or an accident, the earthlings prayed in their hearts. But the rulers of the Earth Empire obviously did not leave anything to chance, and after several heavyweight Imperial Meetings, Christopher, the President of the Federal Empire, personally met with Dr. Fan Dongfang, the head of the Imperial Academy of Sciences, on behalf of the Empire. Dr. Fan Dongfang is the greatest scientist of the 25th century, a legend in the scientific community, and known as the person closest to God. President Christopher conveyed to him the decision of the Empire: to gather the full strength of the Empire, led by the Imperial Academy of Sciences, to launch a scientific research program: to save the Empire from the turmoil at a critical moment when the Empire is facing a critical moment of life and death. The plan was named "Doomsday" and classified as top secret.

In March 2444 AD, the last of the earthlings were brutally destroyed. Pitch black, shaped like an octagonal fish, the hideous-looking Black Ball Imperial Air Fleet suddenly arrived and launched a frantic attack on the earth. In just a few days, the Earth's interstellar air fleet was almost completely wiped out, and the base of the Earth's Space Fleet located on the moon was completely destroyed. The 36 space cities that surround the earth are blazing and have turned into a hell of blood and fire, and tens of millions of space immigrants from the earth have not survived. The Earth Empire is forced to activate the Laser Shield, the last defense system of the Earth. The earth has reached a critical moment of life and death.

The meeting had been going on for more than two hours, and the conference room was filled with smoke, and the presidents, generals, and high-ranking officials of the empire had smoked cigars one after another, completely losing their minimum demeanor and politeness in front of ladies, and someone in the conference room had a slight cough from time to time.

The President of the Earth Empire, Christopher, raised his head slightly and looked at the Chief of the General Staff, Korikin.