Chameko, a young Japanese schoolgirl, inhabits an urban early 1930s setting. Her mother wakes her each morning, beginning a structured routine: donning her school uniform, brushing her teeth with Lion Toothpaste using a Banzai Toothbrush, washing her face, and eating breakfast. Her fermented soybean (natto) breakfast features a surreal sequence where dishes, chopsticks, and food items spring to life in a dance.

She then walks through city streets to school, navigating traffic and passing neighborhood elements like hanging laundry and a local natto seller. At school, she studies subjects including mathematics and reading under her teacher's instruction.

After school, Chameko persuades her mother to take her to the cinema. There, she watches a newsreel about Olympian Kinue Hitomi followed by a period drama featuring Tange Sazen. She views a scene where Tange Sazen decapitates three men without explicit distress and expresses enthusiasm for returning to the cinema the following Sunday.

Her environment reflects contemporary pre-war Japanese urban life, incorporating commercial products like Lion Toothpaste and cultural elements such as the Asakusa Opera song that inspired her story. Her experiences capture routines of childhood, education, family interaction, and entertainment consumption during that era. No information exists regarding her character development beyond this single day or appearances in other official media beyond the 1931 animated short.