Five-year-old northeastern cutie Ningning fled with her mother for three years, her little hands covered in frostbite, single-mindedly seeking to reunite with her dad. Her dad, Prince Xiao Jingheng, was framed and wronged by the crown prince three years ago, feigning submission to plot in secret; mother Shen Qingyuan faked her death and went into hiding, quietly gathering evidence of the crown prince's treason with the enemy. Ningning accidentally stumbled into the deep palace, running into the Buddhist-like pampering imperial noble consort, as well as Qingqing, who went from jealousy to protecting her older sister. The emperor long knew Prince Jing was wronged, waiting quietly for the right time. The crown prince smiles with a knife hidden, repeatedly delivering shady blows. Little Ningning, relying on a burst of tiger-like spirit and joining forces with the old retainers of Prince Jing's estate, helped her dad clear his grievance, and the family was finally reunited.