During winter break, beautiful girl Mao visits her hometown and stays with her uncle. Her youthful, alluring body arouses his desire, and unable to resist, she gives in to his lustful demands. Lured by his gentle yet commanding words, her heart and body gradually fall under his control. By the time she realizes the strange occurrences late at night, their forbidden relationship has already gone too far to turn back. As this taboo romance unfolds, Mao's heart and body are completely claimed by her uncle. A warm yet cruel creampie training deeply shakes the young niece's soul.