In 2077, Earth Federation archaeologist Luo Tian discovered an alien ruin that did not belong to earth civilization 10,000 meters underground in the Sahara Desert. The strange crystal at the core of the ruins erupted with dazzling blue light the moment he touched it, and the time-space distortion storm swallowed him up. When he woke up again, Luo Tian was in 2149 - an era on the verge of doomsday when the Earth Federation was on the verge of collapse, alien ruins were spread all over the world, and space-time chaos occurred frequently. Here, humans are ravaged by the mysterious "Star Virus", mutated alien beasts and out-of-control machines are rampant. What's even weirder is that every alien ruin is releasing energy that distorts time and space. The afterimages of countless travelers flash in the ruins. Some come from the past, some come from the future, but no one can escape this time and space cage.
