fu masters and stolen their chi. Oogway has his own chi stolen, but not before he warns Kai that someone is destined to stop him. Kai uses the chi he stole to return to the Mortal Realm. Meanwhile, Master Shifu announces his retirement from teaching, and names Po as his successor. Po's first attempts to teach inadvertently injure the Furious Five, and Shifu advises Po should try to be more like himself and less like Shifu. Disheartened, Po returns home, where he meets Li Shan, a panda that both quickly realize is Po's biological father, who came to find Po after receiving a sign from the universe that his son was alive. The two immediately bond, much to the dismay and jealousy of Po's adoptive father Mr. Ping. After introducing Li to Shifu and the Five, Po joins the Five to defend the Valley of Peace from Kai's jade zombies, the remains of the kung fu masters that had their chi stolen. Through research, the group learns that Kai and Oogway were once friends, and that Kai saved a wounded Oogway's life by taking him to a secret panda village to be healed. The pandas taught Oogway to give healing chi, but Kai learned to take chi from others for his own personal power, forcing Oogway to banish him to the Spirit Realm. Li offers to take Po to the village to learn chi and defeat Kai, while Shifu and the Five prepare to protect the Valley. Mr. Ping stows away, hoping to drive a wedge between Po and Li, but is soon discovered. Upon arriving at the village, Li refuses to teach Po chi until he has learned to live the relaxed lifestyle of a panda. Kai, hoping to erase Oogway's legacy, steals the chi of every living kung fu master and destroys the Jade Palace. Only Master Tigress escapes, tracking down Po and telling him what happened. When Po demands that Li teach him how to use chi immediately, Li confesses that he lied about knowing chi out of fear of losing his son again. Hurt by his father's misdirection, Po disowns Li and trains alone to defeat Kai, while a repentant Mr. Ping sympathizes with Li and assures that Po will forgive him. After an argument with Tigress, Po admits he cannot defeat Kai alone. Li, Mr. Ping and the pandas ask Po to teach them kung