Borja and Seva live on the bank of the Dnieper. In summer, during vacations, they help adults by delivering letters. Suddenly they learn that a poacher has appeared in the village. The boys start their own investigation.
Sevka
Boris
Stepan (shofyor gruzovika)
Ivan Zakharovich (major militsii, otets Borisa)
Valka (kapitan rechnogo buksira)