Feeling a little bored with their new hero life, Po and the kids are excited to accept an important invitation to the Forbidden City. Meanwhile, there's a curious disturbance deep in Panda Village.

Po and the Kids take a shortcut to the boat bound for the Forbidden City, and are waylaid by a tricky monkey. Zhizhu informs Mayor Li of some distressing sounds coming from the Wellspring.

When Po and eventually the kids finally make it on the Riverboat, they discover old friends, new enemies, and perplexing cargo.

Po and the Kids are once more waylaid, this time by Mole Rats who have deemed Bao their god. But when Bao isn't able to defeat the mythical creature plaguing the Wasteland, Fan Tong steps up to save the day.

Po and the Kids finally arrive in the Forbidden City. After an assassination scare, Xiao enlists Po and the Four Constellations for help protecting her during her father's funeral.

Po and the Kids agree to escort a dirigible shipment of food to a drought-torn region of China. But Nu Hai has some suspicions about Shi Long, which she finds aren't far off when she discovers the dirigible is set to explode...with them on board!

Po and the Kids make it to Gongmen City in search of the contact they heard has some info on the dirigible crash. Meanwhile, Xiao, mourning the presumed death of her new panda friends, takes off into the woods and meets a new friend.

In a giant sea battle, Po and the Kids manage to escape the pursuing police to make it to Volcano island and get some answers. Empress Xiao begins learning how to defend herself.