Poetic portrayal of the young generation of the pre-war and war times. Four best friends – Serezha, Nina, Oska and Zhenya – spent all their school childhood on Clean Ponds. But now the school is finished, and in their favorite arbor they share their dreams of the future, swear allegiance to each other, but they don’t know that tomorrow there will be a war and they will be forced to share parts in terrible events...