Rabbit spirit, Bi-yeon, who has nothing to do except take care of rabbits, picks up a cute little dragon that was badly injured one day. From that day onwards, he starts dreaming of his past life.

Among the divine beasts, the rabbit spirit 'Biyeon' is on the lowest level. Although he is the highest level of divine beast, 'Do-ryu' was born with a prophecy that he would destroy the country. Their meeting, disguised as chance, and his other self from his previous life, start opening his eyes to new things.