In the 378th year of the cosmic calendar, mankind established the "Galactic Federation" spanning twelve star fields. During a border exploration, the Federation accidentally opened the "Gate of the Star Abyss", a sleeping ancient ruin, and released the endless dark energy creatures behind the door-the Abyss Beast. They sweep across the star field like locusts, devouring planets and life.
The top federal geneticists have discovered that after being exposed to the energy of the Abyssal Beast, a small number of humans have activated the "ancient gene chain" in their bodies. They can evolve by absorbing the Abyssal Beast's core and become the only hope against the Abyssal Beast. These people are called "Walkers".
The story begins on the 47th colonial planet "Ivy Star" and tells the epic journey of the young "Yunhe" who grew from an ordinary student to a walker leader who saves human civilization, and finally reveals the ultimate secret of the universe behind the Gate of the Star Abyss.
