In her past life, the little black snake Ping'an was met with cold indifference by her biological mother, Xinghua. After being reborn, she chose to enter the womb of her gentle and kind aunt Xingyue, and was regarded as a precious treasure and tenderly cared for by the seventh prince and his wife. Growing up in a warm and loving family into an understanding and clever child, she bravely and cleverly dealt with Xinghua's step-by-step coercion. Finally, at a moment of crisis, the sealed dragon blood within Ping'an awakened, transforming her into a true dragon and bringing new hope to the dragon clan.