A talented pastry chef meets an unfortunate end, leaving behind his unfulfilled dream of creating the ultimate pastry. However, granted a second chance, he is reborn as Pastry Mille Morteln, a determined nine-year-old, intent on achieving success this time around.
Despite his delectable creations, his new life proves to be far from sugary sweet, as he faces unfamiliar challenges in a fantastical realm. In his quest to realize his lifelong ambition, Pastry must master the art of combat, employing his expertise in baking while uncovering the secrets of magic on his journey.