A century after the revival of spiritual energy, a new era has dawned. In this new era, humans absorb the spiritual energy that has returned to the world, forming spiritual professions. At the same time, the native flora and fauna of the planet are evolving, becoming more primal and spiritually mutated. Lin Yuan discovers that he can infinitely evolve spiritual creatures, purifying their bloodlines. Thus, a thriving online store specializing in the evolution of spiritual creatures is born. Lin Yuan: There's nothing that can't be solved by restocking for you, and if there is, I'll just stock more. This is a pure pet evolution story.