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.
Raia is a famous writer who suffers from writer's block. In order to get inspired again, he then went to New York. It was in that city that Raia met River and then got involved in a love story that was overshadowed by the past.