Shang-Chi, the Master of Kung Fu, faces his most formidable challenge yet when his estranged grandfather, Xin, seeks to unleash the ancient and destructive force of Fin Fang Foom. As the mythical dragon threatens to reawaken and wreak havoc upon the world, Shang-Chi must confront his family's dark legacy, master new martial arts techniques, and prevent a catastrophic catastrophe that could plunge the Earth into chaos.