Ruo li received a mysterious gift from his elder brother, Ruo ji- a badly injured little fox from across the ocean. Ruoli loved it very much and took good care of it every single day, but what he didn’t expect was when the little fox recovered from his injuries, it turned into a human! It turns out that the little fox named "Bai ye" is a demon who is practicing in the immortal class. Before the ceremony of becoming an immortal, his master, the Demonic Fox King, washed away his memories and sent him down to earth to make him experience the three sufferings on earth, namely, hatred and grief, separation from a loved one and helplessness. Only after going through the sufferings can he become an immortal.