Yu Yang, a hard-working office worker, transmigrates to a world where beastmastering is the mainstream due to an accidental fall from a cliff. He obtains a black technology system that helps his contracted beasts constantly purify their bloodlines and awaken their talents. In his hands, even a mudfish struggling in the mud has the potential to become a dragon. A low-talented cat, under Yu Yang's cultivation, can grow into an elemental spirit that fights dragons. As Yu Yang grows, he discovers that the relationship between beastmasters and their contracted beasts is not as simple as he imagined. Whether it's the spiritual beasts of traditional Eastern culture or the strange beasts of the Western world: elemental creatures, plants and animals, mythology, and more...