One night a new light comes to Mossy Bank, and the fireflies lose their glow. 

Every night, the fireflies dance to the chirping of crickets and the croaking of frogs. Then a bright light shines from a tall iron tree. Sani calls it the sun-on-a-stick. The frogs stop croaking. The crickets stop chirping. The glow of the fireflies is gone. Somewhere put there it’s dark enough to dance. Now Haske and his friends must find it.