Rural doctor Ivan Boyko receives an invitation to a clinic in the capital. Here the hero meets an institute friend, Dmitry Kostenko, a successful associate professor. Very soon Ivan becomes convinced of the moral dishonesty of Dmitry, who appropriated the scientific work of his modest colleague Vennik. Boyko exposes the dishonest candidate of sciences to the team.
Юрий Саранцев
as Иван Бойко
Arkadi Tolbuzin
as Костенко
Ролан Быков
as Венник
Леонид Пирогов
as профессор Гармаш
Валентина Ушакова
as Люся Гармаш
Tatyana Alekseeva
as Вера
Yevgenia Yershova
as Грачёва
Ada Vojtsik
as Мария Васильевна
Георгий Юматов
as Алексей Кравчук
Муза Крепкогорская
as Тоня
Mikhail Belousov
as Грачёв
Кирил Лавров
as
