After Po is tapped to become the Spiritual Leader of the Valley of Peace, he needs to find and train a new Dragon Warrior, while a wicked sorceress plans to re-summon all the master villains whom Po has vanquished to the spirit realm.
A waitress, desperate to fulfill her dreams as a restaurant owner, is set on a journey to turn a frog prince back into a human being, but she has to face the same problem after she kisses him.
Continuing his "legendary adventures of awesomeness", Po must face two hugely epic, but different threats: one supernatural and the other a little closer to his home.