Pet shop owner Luo Xiao has been able to attract injured animals since he was a child. A dying owl comes to the door and turns into a mysterious man Ye Ling in the middle of the night. He claimed that Luo Xiao was a descendant of the "Spiritual Pet Guardian" and possessed the power of blood to heal the spiritual race. The peaceful life is broken, and Luo Xiao is forced to get involved in a hidden world where the Yu tribe and the fallen exist, and begins a fateful journey of exploring his life experience and fulfilling an ancient contract.
