This summary provides the key details from the passage in 3 sentences:
The passage describes a young beggar girl named Fyokla who finds the cobbler Terenty to help her brother Danilka, whose hand is stuck in a tree trying to get a cuckoo egg. Terenty and Fyokla walk over a mile through heavy rain and thunder to the count's copse, where Terenty is able to remove Danilka's crushed hand from the tree. On the walk back, Terenty explains to the children that thunder is caused by clouds running into each other.