Through a twist of fate, Ye Ren obtains a coveted personal system. Kill, eat, absorb, and extract the genes of his enemies to evolve himself. The essence of life is evolution; plundering the genes of other creatures for his own use, he becomes the fourth man to stand at the top of the food chain, achieving ultimate dominance. He gains the mantis's bone blade that can cut through heaven and earth, the dividing cells of an earthworm, the 100,000-volt muscles of an electric eel, the tenacious constitution of a cockroach, the queen ant's organ for breeding new species, and even more valuable alien gifts await him.