The heroes of the film are first-graders Snezhana and Alyosha Seroglazov, who received the nickname "TwoBriefcases" because of his small stature on the first day of attending school, as well as a small puppy Kysh.
as Алёша Сероглазов, «Двапортфеля»
as Снежана Соколова, Снежка, «Снежана Владимировна»
as папа Алёши, Дмитрий Эдуардович
as Сергей, студент
as мама Алёши, Ирина Дмитриевна
as завуч, Пал Палыч
as соседка
as Юрий Андреевич, завхоз
as сосед Алёши
as проводник собаки-ищейки Дика
as Володькин, старший лейтенант милиции
as понятая
as понятой
as продавец собаки
as соседка
as уборщица
as соседка снизу
as Васин
as Бузукин Николай Иванович, заведующий лабораторией-вивария
as бабуля
as продавец
as Виктор Михайлович
as пожилая соседка с малышом
as Гриша Сундарев
as школьный репортер
as Миша Львов
as Настя Акулова
as Оля Блинова
as Рудик Барышкин
as Оля Смородина
as эпизод
as в титрах не указан
