The current head of the Wuma family is Wuma Yuan. He is looking for the last pure-blooded source of the Contractor clan. No one knows whether pure-blooded people still exist in this world. Contractors from top to bottom of the Wuma family keep silent about the term "pure-blooded person" because it is already taboo. But the head of the Wuma family, Wuma Yuan, is still searching almost frantically. Many contract masters knew that pure-blooded people had died in that accident. No one survived. Contractors are not ordinary people, let alone those of pure blood origin. But they all died in accidents, which makes people suspicious. But no one dared to ask, this matter had been suppressed by Wu Ma Yuan. So, does the pure-blooded Contractor still exist in this world? No one knows.
The story unfolds from here