The emperor's descendants are dwindling, and women are widely selected to enter the palace to continue the imperial bloodline. Su Luoshuang unexpectedly gains the emperor's favor and, after ten months of pregnancy, gives birth to five sons. To protect her children, she conceals the truth about their birth, is framed by rumors, and is relegated to the cold palace. The imperial princes possess a spiritual clan's heterogenous constitution, nearly revealing the secret several times. Noble Consort Xuan plots step by step, and Prince Ning raises an army in rebellion. When the truth is revealed, His Majesty turns out to be from the spiritual clan and was saved by Su Luoshuang in the past. Once the turmoil is quelled, she clears her name, ascends to the position of empress, and all five sons are bestowed titles.