After returning to the mortal world, Kai summons several of his jade zombies to find Oogway's students and bring them to him, this leads to them finding and briefly fighting Po, Shifu, and the Five, and Kai discovering them by seeing them through his minions eyes, after which, he recalls them back.
Crane and Mantis are sent to investigate, and run into Master Bear, Master Chicken, and Master Croc, who's villages were also attacked. They confront Kai, but are easily defeated and turned into jade zombies. Later, Kai and the zombified Crane and Mantis attack the Jade Palace, and Kai steals the chi of the rest of the Five and Shifu, turning them into jade zombies, except for Tigress, who was sent away by Shifu to warn Po.
Later, when Kai arrives at the secret panda village, he summons his minions to attack, but they are held at bay by Po and the other pandas. When Kai fights with Po, he recalls them back again. After Kai is defeated by Po in the Spirit Realm, they all have their chi restored and are reverted back to normal.