A new teacher and her brother, who has been appointed head of fisheries control, arrive in a village on the shores of an estuary. Despite the hidden resistance of their fellow villagers, they manage to engage the village schoolchildren in an active fight against poachers.
as Толя Симагин
as Витя Белоус
as Саша Топейко
as Груша
as Эра
as Катя
as Андрей Петрович Громов, инспектор, начальник рыбнадзора
as Татьяна Петровна, учитель географии
as Жора Дахно, браконьер
as Лопатин, браконьер
as "Боязливый", браконьер
as мать Толи Симагина
as Богдан Семёнович Храмусь, директор школы
as Фомич, старик, главарь браконьеров
as Верещак, браконьер
as отец Вити Белоуса
