A meteorite falls, bringing about a devastating crisis to the world. However, strange energy activates the world, and many species begin their evolutionary journey. A profession formed by humans and mutated beasts making contracts is known as a Battle Pet Master. Su Yun obtains a bloodline strengthening system and begins his life of raising divine beasts. "Swallow Heaven Python, sink that aircraft carrier!" "Mountain Giant Ape, you've evolved well, beat that Slaughter Tyrannosaurus into a pulp!" "What, I, I've evolved too?"