Mom is trying to reach her work deadline when she receives a call from Chi-kun’s mother who’s down with a cold which puts mom in a pinch; Mom and Bunji went to Iwamura’s house where there are four boys. They are tough boys and usually place baseball at home; They went camping with another family by the riverbed. Dad claimed to be the Commander Fire when Bunji and the other boys began to set up the portable stove; Bunji and the other kids swam in the river, caught rhinoceros beetles in the mountains, and fully enjoy the camping trip. However, Bunji’s rhinoceros beetle went missing so everyone began searching…