In a realm where humans seek immortality and spirits take form, a young beggar named A'Dai becomes the disciple of the carefree immortal Xiao Yihan. Their bond grows through training, but when Xiao Yihan betrays the sect to save his brother, A'Dai is forced to confront him. Through hardship and revelation, they reunite and work together to end a centuries-old conflict between three warring races and two realms.