Ame is a child with a fondness for sweets. However, a cavity named Caries resides inside her mouth! Caries addresses Ame as "Mama" and behaves with total impunity, treating her teeth like furniture and even seizing control of her body. Ame is perpetually ordered around by Caries. Ame and Caries—an somewhat unconventional mother-daughter pair!? A slapstick comedy depicting their chaotic everyday existence!