The Mongol Heleer UPD is shrouded in mystery, with its origins and true purpose unknown. However, it's clear that this ancient technology holds the key to unlocking the secrets of the spirit realm and Po's own destiny.
As Po prepares to face this new challenge, he's introduced to his long-lost biological father, Li Shan (Bryan Cranston), a panda who lives in the mountains of China. Li Shan is on a mission to find the long-lost panda village, where Po's mother, Oogway's daughter, and Li Shan's wife, are said to reside. This sets the stage for an epic adventure that takes Po and his friends on a perilous journey to save the world from Kai's evil plans.
The UPD is a powerful artifact that allows its user to communicate with the spirits of the dead, harnessing their energy and wisdom to achieve great feats. In the film, Po discovers that he's the chosen one, destined to wield the UPD and use its power to defeat Kai and save the world.