Baikinsennin informs Baikinman about a mystical artifact named "Mekoisu no tsubo," capable of empowering him to vanquish Anpanman. Concurrently, Yaada-hime, a princess from the fallen Yaada-koku realm, pursues the vase to revive her kingdom's splendor. Anpanman aligns with Yaada-hime, sparking an intense pursuit as both factions vie for control of the coveted vase.