A family hires a babysitter who seems to possess magical powers.

Village boy Klimko, accompanying his father to the front, stays with his stepmother. In the occupied village, the hero cannot see his friends. Having survived hunger, injuries and loneliness, the boy enters a vocational school - nine kilometers from the village - and works with new friends for the front...

A new young teacher Tatyana Ivanovna takes a problematic 5th"B" class and wins with the score 4:0.

The movie is based on short stories by Viktor Dragunskiy about Denis Korablev, his friends and family.