The rotund Dragon Warrior, Po, finally reunites with his long-lost biological father, Li, as a supernatural fiend--the terrible sword-wielding yak, Kai--uses his indomitable strength to harvest a Kung Fu fighter's most prized possession. Now, as Master Shifu and the fearless Furious Five team are the only ones left to stop this all-powerful new enemy, our dumpling-gorging hero must first harness his own essence of existence to stand a chance; however, can he fight Kai all by himself?