Po discovers the seeds of the Shuyong, the Tree of Eternity that will exist before and after time, whose seeds are magical items that can send the user back in time if the user destroys one of these seeds, and whose fruits imbue the person that ate them with a complete mastery of time. Po disobeys Shifu and uses the seeds for his own selfish purposes until Fenghunang gets a hold of one of these seeds.
Villain: Fenghuang