"Soreike! Anpanman: Tobe! Tobe! Chibigon" is a feature-length anime film based on the popular "Anpanman" franchise, which centers on the adventures of Anpanman, a superhero made of anpan (a sweet bread filled with red bean paste). The film introduces a new character, Chibigon, a small, mysterious creature who becomes central to the story. The narrative begins when Chibigon is discovered by Anpanman and his friends in a forest. The creature is initially shy and unable to communicate, but it quickly forms a bond with the group.

As the story progresses, Chibigon reveals unique abilities, including the power to fly and emit a glowing light. These abilities attract the attention of Baikinman, the series' recurring antagonist, who seeks to exploit Chibigon for his own nefarious purposes. Baikinman, along with his accomplices, devises a plan to capture Chibigon, leading to a series of confrontations with Anpanman and his allies. The film explores themes of friendship, bravery, and the importance of protecting those who are vulnerable.

The plot intensifies as Chibigon's origins are gradually uncovered. It is revealed that Chibigon is from a distant star and possesses a significant role in maintaining balance in the universe. This revelation adds urgency to the conflict, as Baikinman's actions threaten not only Chibigon but also the stability of the cosmos. Anpanman and his friends must work together to protect Chibigon and ensure that it can fulfill its destiny.

Throughout the film, the characters demonstrate their signature traits: Anpanman's selflessness and willingness to help others, Baikinman's relentless scheming, and the supportive roles of Anpanman's friends, such as Shokupanman and Currypanman. The story balances action-packed sequences with moments of emotional depth, particularly in the interactions between Chibigon and the other characters. The film concludes with a resolution that reinforces the values of kindness and cooperation, as Anpanman and his friends succeed in safeguarding Chibigon and restoring harmony.