In a kingdom where ice cream reigns supreme, Princess Vanilla struggles to conjure this delectable treat despite her relentless efforts. Frustrated, she embarks on a journey, crossing paths with Anpanman and Kokin-chan. Along the way, she unravels the mystery behind her ice cream-making incapacity. As Princess Vanilla seeks answers, the nefarious Baikinman launches an assault on the ice cream realm in her absence.