[5] Young Zhenya, the daughter of Lieutenant Colonel Alexandrov, arrives at a summer house with her older sister Olga.

There, she befriends Timur, the leader of a local group of young pioneers devoted to helping people, particularly the elderly and families of Red Army soldiers.

Despite this, Timur and his group are actively fighting against real troublemakers led by the rowdy gang of Kvakin, "Figura," and their crew, who raid summer gardens at night.

When Zhenya misses her train to Moscow by mistake and risks not seeing her father before his departure to the front, Timur decides to "borrow" his uncle's motorcycle to take her to the city.

The story concludes with a heartfelt farewell as Timur’s uncle departs for the army, leaving the group of young pioneers inspired by his example.