After the Great Kanto earthquake in 1923, a troupe of female sumo wrestlers arrive in Tokyo.

Utsumi and Seto’s daily routine is to spend their afterschool hours just jabbering with one another along a riverbed. Getting excited over trivial word play; agonizing over the content of an email to be sent to a girl; and at times talking about a serious problem, the two endlessly engage in meaningless idle talk as if it were meaningful.