Po is finally living the dream as the Dragon Warrior—until a dark secret from his past comes roaring back. When the ruthless peacock lord Shen unleashes a terrifying new weapon to wipe out kung fu itself, Po and the Furious Five race across China to put an end to his plans. But if Po is to have any hope of stopping him, he must first unravel the mystery of where he came from and come to terms with his trauma.