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Shifu took Po to Master Lun's musician concert. He later revealed that master Lun studied the finest Chi of sound. Master Lun possess the magical wooden pipes that can make other instruments and things fly in air. However, the Yaoguai, the evil musical kung fu masters wanted to possess the magical pipes and with all five instruments conquer the world. Po stole the pipes from master Lun and tried to play them but then he met two gooses from Yaoguai. Then arrived master Lun and tried to fight evil gooses. Then the gooses took away the pipes. With their magical instruments they arrived to a place that looked like a big drum. Master Lun and Po started to fight. Then to help arrived Shifu with his magical flute. Master Lun and Master Shifu took a good fight but then the Yaoguai defeated them. Now Po had to fight with two evil kung fu masters with magical kung fu instruments. Then Po used the big drum to defeat the Yaoguai. Unfortunately, the Yaoguai had already summoned the Anti Chord, heralding the end of the universe. The resulting black hole swallowed Lun and Shifu. But thankfully, they are saved when Po reunite the magical instruments and created a new sixth tone with his own voice, restoring everything to normal. Later master Lun taught Po how to play music in harmony, with mixed success.