Queen of Katwe is a biographical drama film based on the true story of Phiona Mutesi, a Ugandan chess prodigy. Lupita Nyong'o plays the role of Harriet, Phiona's mother, who supports her daughter's dreams despite the challenges they face. The film explores themes of perseverance, determination, and the power of education. Nyong'o's performance is heartfelt and brings depth to the character of Harriet.