This document provides a summary of the beginning of the story "Chuck and Geek" by Arkady Gaidar. It introduces the two main characters, Chuck and Geek, who are brothers living in Moscow with their mother. They receive a letter from their father, who lives far away in the forest by the Blue Mountains, inviting them to visit him. Their mother buys train tickets and they embark on the long journey. However, Chuck and Geek get into an argument that causes trouble for their travel plans.