This is the offbeat story of a woman named Yumiko, a serious, yet ​apprehensive and honest single mother of a son and daughter, both in their twenties. After observing the mother meticulously sew up a hole son's sock, the daughter urges her to "live a little." One day, while walking in a neighborhood park, she stops and listens to a band play an instrumental version of Simon and Garfunkle's "I'd Rather Be a Sparrow than a Snail"(El Condor Pasa). Upon hearing this tune, she briefly loses herself in the music before coming back to reality, but something in her psyche has changed. She recognizes that her attempts at being the prefect mother have gone largely unappreciated.