Soreike! Anpanman: Chapon no Hero!

Pantan is a red panda who seeks to find the treasure thought to be in a rainbow star in the night sky, in order to keep a promise made to an adventurer long ago. When Pantan and Anpanman encounter each other, Anpanman lends his abilities to help out Pantan.

The story begins in Anpanman World, where everybody is bustling around, getting ready for the annual Star Festival. On that day, an egg emerges from Baikinman's garbage box, and when it hatches, a mysterious boy named Kurun emerges from within. Though Kurun does not know where he came from, he spends his days having fun with everybody. But one day, black stars begin raining down. Anpanman thinks that something suspicious might be occurring at the Star of Life, and he heads there.

The film's story centers on Anpanman's nemesis Baikinman, but this time, he attempts to become a warrior of love and courage when he is sucked into a picture book. Inside the book is a large forest where fairies live. Baikinman meets the fairy Lulun, who asks him to defeat an elephant that is rampaging in the forest. Although Baikinman is reluctant, he tries his best to defeat the elephant. However, it is too strong for Baikinman, so he tells Lulun to call Anpanman to help protect the picture book world.

Anpanman's friends go see a bubble show performed by Shabondama-hime and her Shabondama Girls, who make exquisite bubbles by playing their flutes. One of the girls, Purun, can't make big bubbles no matter how much she rehearses. She feels inadequate as she goes to retrieve her lost flute, which Creampanda finds and goes to return. Meanwhile Baikinman takes over Shabondama-hime's castle and steals the flutes, using their power to create evil bubbles, and Purun must realize her own importance and save the day with Anpanman's help.