The story follows Dre Parker (Jaden Smith), a 12-year-old from Detroit who moves to Beijing, China with his mother (Han Wenwen). Dre's life takes a dramatic turn when he befriends a maintenance worker, Mr. Han (Jackie Chan), a karate master who becomes his mentor. When Dre faces bullying at school, Mr. Han teaches him the ways of kung fu to defend himself. As Dre learns the ancient art of karate, he faces a series of challenges, including a high-stakes tournament against a ruthless opponent.