On a snowy night in the twelfth lunar month, Hong Qiniang, a yellow immortal with three hundred years of cultivation, was shot and injured by the hunter Liu Balian while protecting her three cubs, and fled to the mountain temple to ask the young girl Niuniu for help. Pure and kind Niuniu overcame her fear, treated Hong Qiniang's wounds and covered her with clothes to protect the cubs. When Liu Balian brought men to search and capture, Niuniu stepped forward to cover for them, and Hong Qiniang used magic to summon a pack of wolves to scare away the wicked. Grateful for the life-saving grace, Hong Qiniang became sworn sisters with Niuniu. However, Liu Balian had not given up, and planned to collude with Wealthy Man Zhao to capture them again, and under the peaceful snowy night, crises lurked on all sides.